Question bank

Chapter-1   Plant Life - The Leaf
Q-1 Answer the Following
(a). What is venation?
(b). State three functions of veins.
(c). What is a tendril? State the function of a tendril.
(d). Name a leaf that is modified into a tendril.
Q-2 Differentiate between a monocot leaf and dicot leaf with respect to:
(a). Petiole
(b). Venation
Q-3 Explain briefly:
(i) Leaves of certain plants are modified into spines.
(ii) Certain plants become insectivorous.
Q-4 Give one example of a plant in which the leaves are modified for the following function:
(i) Food storage
(ii) To reduce transpiration
Q-5 Pick the odd one out.
(i) Rose, Neem, Gulmohar, Sunflower
(ii) Rachis, Tamarind, Leaflets, Petiole
(iii) Iodine, Methyl alcohol, Protein, Starch
(iv) Rose, Neem, Gulmohar, Hydrilla
Q-6 Name the gas that diffuses out of a leaf during each of the following processes:
(i) Photosynthesis
(ii) Respiration
(iii) Transpiration
Multiple Choice Questions
Q-1 

Which of the following is not a function of the vein?

(i)

Give support and rigidity to the leaf blade

(ii)

Form the skeletal framework of the leaf

(iii)

Distribute water and nutrients to whole plant

(iv)

Distribute water and nutrients in the lamina
Q-2 

Plants with sessile leaves belong to the plant group:

(i)

Monocotyledon only

(ii)

Dicotyledon only

(iii)

Monocotyledon and Dicotyledon

(iv)

None of these
Q-3 

A swollen leaf base is called:

(i)

Stipule

(ii)

Pulvinus

(iii)

Bud

(iv)

Bulb
Q-4 

Which of the following is NOT a part of the leaf blade?

(i)

Midrib

(ii)

Vein

(iii)

Petiole

(iv)

Leaf apex
Q-5 

Which of the following statements is NOT TRUE for simple leaves?

(i)

Lamina is not divided into leaflets

(ii)

The main vein is called rachis

(iii)

Stipules are present at the base of leaf

(iv)

Axillary bud is present in axil of simple leaf
Q-6 

Which of the following statements is TRUE for simple leaves?

(i)

The lamina is whole

(ii)

The rachis has a terminal leaflet

(iii)

Stipules are present at the base of leaflet

(iv)

Buds are borne in the axil of leaflet
Q-7 

Which of the following is NOT a part of photosynthesis?

(i)

Carbon dioxide

(ii)

Oxygen

(iii)

Nitrogen

(iv)

Water
Q-8 

The leaf surface is covered with pores called:

(i)

Stomata

(ii)

Holes

(iii)

Guard cells

(iv)

Veinlets
Q-9 

Which term or phrase is TRUE for green plants?

(i)

Autotroph

(ii)

Primary food producer

(iii)

Primary consumer

(iv)

Both (a) and (b) are correct
Q-10 

Which is not a leaf modification?

(i)

Tendril of Sweet pea

(ii)

Thorn of rose

(iii)

Spines of cactus

(iv)

Scale leaves of onion
Q-11 

The leaves of ------------------------- are modified into needles.

(i)

Cactus

(ii)

Pine

(iii)

Rose

(iv)

Sweet pea
Q-12 

In the bulb of onion, the innermost leaves are:

(i)

Reduced to a disc

(ii)

Thin and papery

(iii)

Fleshy with deposition of food

(iv)

None of these
Q-13 

Which of the following is not a carnivorous plant?

(i)

Venus flytrap

(ii)

Pitcher plant

(iii)

Bryophyllum

(iv)

All are carnivorous
Q-14 

In some plants, the leaves are borne on a stalk. The stalk is called:

(i)

Pedicel

(ii)

Petiole

(iii)

Rachis

(iv)

Pulvinus
Q-15 

Which statement is NOT TRUE for stipules?

(i)

Stipules protect the bud and young leaf

(ii)

Stipules are seen at the base of the leaf

(iii)

Stipules may be leafy or stiff like a thorn

(iv)

All leaves have stipules
Chapter-2   Flower and Fruit
Q-1 Answer the Following
(i) What is a flower?
(ii) Name the whorls of a typical flower.
(iii) What is a fruit?
(iv) Name the parts of a typical fruit.
(v) State three functions of the fruit.
(vi) Name the three main types of fruits and give two examples of each type.
Q-2 Name the part of a flower that:
(i) Protects it in bud stage.
(ii) Attracts insects for pollination.
(iii) Constitutes the male whorl.
(iv) Consists of ovary, style and stigma.
Q-3 State one function of each:
(i) Pedicel
(ii) Thalamus
(iii) Anthers
(iv) Stigma
(v) Placenta
(vi) Bracts
Q-4 Define:
(i) Pollination
(ii) Fertilisation
Q-5 Pick the odd one out:
(i) Stigma, Anthers, Style, Ovary
(ii) Anther, Filament, Style, Pollen sac
(iii) Tomato, brinjal, pear, watermelon
(iv) Drupe, Berry, Ovule, Pome
Q-6 Fill in the blanks
(i) Calyx is a collection of ------------------ .
(ii) Corolla is a collection of ---------------- .
(iii) ______ is the tissue to which ovules are attached.
(iv) The flower stalk is called the ----------- .
(v) The parts of the ovary are ----------,------------- and ----------------- .
(vi) The parts of the stamen are ------------- and -------------
(vii) ------------ is a ripened ovary.
(viii) ------------------ is the middle layer of the pericarp.
(ix) ______ develop from the fertilised ovule.
(x) ______ is an example of a berry
Q-7 Math the Columns:
Multiple Choice Questions
Q-1 

If the androecium is absent, the flower is said to be:

(i)

Pistillate

(ii)

Staminate

(iii)

Neuter

(iv)

None of these
Q-2 

Which of the following statement is NOT TRUE for the gynaecium?

(i)

Gynaecium is made up of carpels

(ii)

It is composed of stigma, style and ovary

(iii)

The ovary contains the ovules

(iv)

It is the second whorl of the flower
Q-3 

Which is NOT part of the stamen?

(i)

Anther

(ii)

Filament

(iii)

Pollen sac

(iv)

Style
Q-4 

Which of the following is not a vegetative part of a plant?

(i)

Axillary bud

(ii)

Floral bud

(iii)

Epicalyx

(iv)

Bracts
Q-5 

Which is an essential whorl of a flower?

(i)

Bracts

(ii)

Epicalyx

(iii)

Stamen

(iv)

Petal
Q-6 

The stalk that holds up the the flower is called:

(i)

Petiole

(ii)

Peduncle

(iii)

Rachis

(iv)

Pedicel
Q-7 

Which statement is NOT TRUE for sepals?

(i)

It is the innermost whorl of the flower

(ii)

It is the outermost whorl of the flower

(iii)

It is the non-essential whorl of the flower

(iv)

It protects the flower in bud stage
Q-8 

Which of the following statements is TRUE for stamens?

(i)

It is the female reproductive part of a flower

(ii)

It is also called the androecium

(iii)

It is the innermost whorl of the flower

(iv)

It helps attract insects for pollination
Q-9 

Fusion of male and female nuclei is called :

(i)

Zygote

(ii)

Fertilisation

(iii)

Pollination

(iv)

Reproduction
Q-10 

Cross-pollination occurs when the pollen is transferred to the stigma of:

(i)

Flowers of the same species but on different plants

(ii)

Flowers of different species

(iii)

Different flowers on the same plant

(iv)

Both (a) and (c) are correct
Q-11 

Which is NOT a characteristic of wind pollinated flowers?

(i)

Flowers are bright and showy

(ii)

Flowers do not have fragrance

(iii)

Pollen grains are smooth and light

(iv)

Anthers are loosely attached to filament
Q-12 

Which of the following is not a true fruit?

(i)

Pear

(ii)

Tomato

(iii)

Watermelon

(iv)

Coconut
Q-13 

Which of the following is a wind pollinated plant:

(i)

Maize

(ii)

Hydrilla

(iii)

Canna

(iv)

Sunflower
Q-14 

Which of the following is not a fruit?

(i)

Brinjal

(ii)

Drumstick

(iii)

Pumpkin

(iv)

Carrot
Q-15 

Entomophily means flowers are pollinated by:

(i)

Birds

(ii)

Insects

(iii)

Wind

(iv)

Water
Chapter-3   Seed Structure and Seed Germination
Q-1 Define the following terms:
(i) Germination
(ii) Dormancy
(iii) Seedling
Q-2 Answer the Following
(1). State two points of difference between epigeal germination and hypogeal germination.
(2). With the help of neatly labelled sketches, briefly describe the stages in the germination of a bean seed.
Q-3 Give one examples each of:
(i) Seeds showing hypogeal germination.
(ii) Seeds showing epigeal germination.
Q-4 State whether the statements are true or false:
(i) The energy required for germination comes from respiration.
(ii) Enzymes are destroyed at high temperatures.
(iii) Seeds can germinate in the absence of soil.
(iv) Seeds may not germinate if planted too deep in the soil.
(v) Tegmen is the outer seed coat.
(vi) Fibrous roots have a bushy appearance.
(vii) Tap roots have shallow roots.
(viii) Seed leaves can perform photosynthesis.
(ix) In hypogeal germination the cotyledons are pulled above the soil.
(x) In maize, the seed coat is fused with the fruit wall.
Multiple Choice Questions
Q-1 

The seed develops from:

(i)

Ovary

(ii)

Ovule

(iii)

Fruit

(iv)

Embryo
Q-2 

Which statement is NOT TRUE about the seed coat?

(i)

It consists of three integuments

(ii)

It protects the inner parts of the seed

(iii)

Its outermost layer is called testa

(iv)

Only (b) and (c) are true
Q-3 

Water enters the seed through the:

(i)

Micropyle

(ii)

Hilum

(iii)

Tegmen

(iv)

All of these
Q-4 

Seeds of mustard store:

(i)

Starch

(ii)

Oil

(iii)

Protein

(iv)

None of these
Q-5 

Which of the following is a part of the embryo?

(i)

Cotyledon

(ii)

Radicle

(iii)

Plumule

(iv)

All of these
Q-6 

Which statement is TRUE about the radicle?

(i)

It develops into the root system

(ii)

It develops into the shoot system

(iii)

It grows upwards towards light

(iv)

It is the upper part of the embryonic axis
Q-7 

Which statement is TRUE about the cotyledon?

(i)

Seeds may have 1 or 2 cotyledons

(ii)

In some seeds the cotyledons store food

(iii)

In some seeds the cotyledon is papery

(iv)

All are true statements
Q-8 

Which of the following is NOT a condition for seed germination?

(i)

Wind velocity

(ii)

Optimum temperature

(iii)

Water

(iv)

Oxygen
Q-9 

Which statement is TRUE about the plumule?

(i)

It gives rise to the first true leaves

(ii)

It gives rise to the root system

(iii)

It is the lower end of the embryonic axis

(iv)

All are true statements
Q-10 

Which statement is TRUE about the fibrous root system?

(i)

Primary root dies

(ii)

Root has a bushy appearance

(iii)

Lateral roots develop from the base of stem

(iv)

All are true statements
Q-11 

Which seed shows hypogeal germination?

(i)

Bean

(ii)

Papaya

(iii)

Rice

(iv)

Castor
Q-12 

Which seed shows epigeal germination?

(i)

Castor

(ii)

Groundnut

(iii)

Pea

(iv)

Rice
Q-13 

Seed will not germinate if placed in:

(i)

Distilled water covered with a layer of oil

(ii)

Ice cold water

(iii)

Boiling water

(iv)

All of these
Q-14 

A seed may fail to germinate if:

(i)

Planted too deep in the soil

(ii)

Placed in dry sandy soil

(iii)

(a) and (b) are true statements

(iv)

(a) and (b) are false statements
Q-15 

Two important components of the seed are:

(i)

Tegmen + Testa

(ii)

Radicle + Plumule

(iii)

Embryo+ Endosperm

(iv)

Hilum + Micropyle
Chapter-4   Cell: Fundamental Unit of Life
Q-1 Answer the Following
(1). Define a cell.
(2). Explain why animal cells do not have a cell wall
(3). If a plant does not get water for a length of time, it dies. List the importance of water to a plant.
Q-2 State two functions of each of the following:
(i) Cell wall
(ii) Nucleus
(iii) Vacuoles
Q-3 Fill in the blanks:
(i) ______ is the site of photosynthesis in plants.
(ii) ______ imparts colour to flowers and fruits.
(iii) Leucoplasts store ______ .
(iv) The cell wall is made up of a complex chemical substance called ______
(v) The ______ is semipermeable.
(vi) Vacuole is bound by a membrane called ------------------- .
(vii) Glucose is stored in a plant cells in the form of --------- .
(viii) Glucose is stored in a animal cells in the form of --------- .
Multiple Choice Questions
Q-1 

Which statement is NOT TRUE about the cell wall?

(i)

Non-living

(ii)

Made of cellulose

(iii)

Semipermeable

(iv)

Freely permeable
Q-2 

Which statement is TRUE about the cell membrane?

(i)

Gives rigidity to the cell

(ii)

It is freely permeable

(iii)

It is semipermeable

(iv)

It is non-living
Q-3 

The vacuole is bounded by:

(i)

Tonoplast

(ii)

Chloroplast

(iii)

Chromoplast

(iv)

Leucoplast
Q-4 

Which statement is TRUE about chromoplast?

(i)

Colourless pigment

(ii)

Stores food

(iii)

Imparts colour

(iv)

Makes food
Q-5 

Which statement is TRUE about the vacuole?

(i)

Stores soluble pigments, sugars, enzymes

(ii)

Makes the cell turgid

(iii)

Large and prominent in plants

(iv)

All of these are true statements
Q-6 

Which of these is not a plastid?

(i)

Chromoplast

(ii)

Tonoplast

(iii)

Leucoplast

(iv)

Chloroplast
Q-7 

Which of the following is not found in an animal cell?

(i)

Cell wall

(ii)

Cell membrane

(iii)

Permanent vacuole

(iv)

Plastids
Q-8 

Which statement is NOT TRUE about the centrioles?

(i)

It initiates cell division

(ii)

It is a microtubular structure

(iii)

It is present inside the nucleus

(iv)

It is found only in animal cells
Q-9 

Select the reason that makes amoeba an animal cell :

(i)

It does not have a cell wall

(ii)

It has temporary food vacuoles

(iii)

It can move by changing its body shape

(iv)

All of these
Q-10 

Which of these are NOT found inside the nucleus?

(i)

Chromosomes

(ii)

Nucleolus

(iii)

Nucleoplasm

(iv)

Centrioles
Q-11 

Which of the following statement is false?

(i)

All animal cells are capable of cell division

(ii)

Animal cells do not have chlorophyll

(iii)

Green plants make their own food

(iv)

All these are false statements
Q-12 

If water is removed from the vacuole, which statement is true?

(i)

Plant wilts or droops

(ii)

Cell condition is said to be turgid

(iii)

Cell condition is said to be flaccid

(iv)

(a) and (c) are true statements
Q-13 

Which of the following is not a cell organelle?

(i)

Plastids

(ii)

Nucleus

(iii)

Vacuole

(iv)

Centriole
Q-14 

If a grape is placed in a salt solution:

(i)

It will swell up

(ii)

It will shrivel up

(iii)

No change will be observed

(iv)

None of these
Q-15 

The largest egg is that of:

(i)

Ostrich

(ii)

Turkey

(iii)

Peacock

(iv)

Goose
Chapter-5   Organ Systems
Q-1 Name the three glands associated with the alimentary canal and match them with their functions given below.
(i) It produces bile.
(ii) It helps to moisten food so that it can be swallowed easily.
(iii) It helps to convert and store glucose in the form of glycogen.
(iv) It manufactures fatty substances like cholesterol.
(v) The waste product urea is made by this gland.
(vi) The secretions from this gland help to digest fats.
(vii) The secretions from this gland help to digest proteins.
Q-2 State whether the given statement is true or false .
(i) Pancreatic juice contains hydrochloric acid.
(ii) Gastric juice contains bile.
(iii) Bile is stored in the liver.
(iv) Assimilation is the process by which nutrients from the alimentary canal enter the blood.
(v) Faecal matter is temporarily stored in the rectum.
(vi) The appendix does not have any role to play in human digestion.
(vii) Villi form the folded lining of the small intestine.
(viii) When faeces are passed out of the body, this is called ejection.
(ix) Enzymes speed up the process of digestion.
(x) Fats and carbohydrates are body building nutrients.
(xi) The pharynx is also called the voice box.
(xii) Cilia help to keep unwanted particles out of the respiratory tract.
(xiii) During expiration, the diaphragm arches upwards.
(xiv) Breathing is a chemical process.
(xv) The lungs are protected by the pleural membranes.
(xvi) Thick, muscular and elastic walls with narrow lumen.
(xvii) Valves are present.
(xviii) Carries blood from the organs to the heart.
(xix) Generally carries oxygenated blood.
(xx) It is formed by the joining of capillaries.
Q-3 Answer the Following
(i) Why do organisms respire?
(ii) Name the special organ in mammals that enable them to breathe.
Q-4 Give one term (or name) for the following:
(i) The tubes that lead air into the lungs.
(ii) A muscular flap that prevents food from entering the wind pipe at the time of swallowing.
(iii) The common chamber for air and food.
(iv) The ultimate passages of the respiratory tract.
(v) The process by which gaseous exchange takes place across the cell membrane.
(vi) The protective membranes that envelop the lungs.
(vii) Muscular flaps which allow the blood to flow in only one direction.
(viii) Blood vessels that carry blood away from the heart .
(ix) Blood vessels that carry blood into the heart.
(x) Blood cells that contain the respiratory pigment.
(xi) The respiratory pigment contained in certain blood cells.
(xii) The component of the blood which helps in the clotting of the blood.
(xiii) Blood cells that protect the body against infections and diseases.
(xiv) The protective membrane that envelops the heart.
(xv) The type of muscle that constitutes the heart muscle.
(xvi) The chamber of the heart that pumps the blood to the different parts of the body.
(xvii) The chamber of the heart that pumps blood to the lungs.
Q-5 State one important function of each of the following:
(i) Nose
(ii) Larynx
(iii) Rib cage
Q-6 Differentiate between:
(i) Respiration and breathing
(ii) Right lung and the left lung
(iii) Inhalation and exhalation
Q-7 Fill in the blanks:
(i) Pulse rate averages between ------------------ beats per minute in the resting stage.
(ii) ---------------------------- unite to form venules.
(iii) The ---------------- is the largest artery.
(iv) Blood of group B has antigen ----------------- and antibody -------------------- .
(v) Blood of group -------------------- does not have any antigens.
(vi) Systolic pressure is the -------------------- value or reading of the blood pressure.
(vii) --------------------------- blood cells have a large nucleus.
(viii) ------------------------- blood cells do not have a nucleus.
(ix) Clotting of blood is a function of the -------- .
(x) ----------------------- in the heart allow the blood to flow in one direction.
Q-8 Explain why:
(i) Heart is said to have double circulation.
(ii) Veins have valves.
Multiple Choice Questions
Q-1 

Which of these is a part of the alimentary canal?

(i)

Stomach

(ii)

Liver

(iii)

Pancreas

(iv)

Lungs
Q-2 

Which statement is TRUE about enzymes?

(i)

They are destroyed on heating

(ii)

They are produced by glands

(iii)

Reactions occur quickly with enzymes

(iv)

All are true statements
Q-3 

Which is a TRUE statement?

(i)

Enzymes from salivary glands digest proteins

(ii)

Bile is produced in the spleen

(iii)

No digestion takes place in the oesophagus

(iv)

Urea is formed in the kidneys
Q-4 

Which statement is TRUE about saliva?

(i)

It contains the enzyme amylase

(ii)

It converts starch into maltose

(iii)

Saliva is secreted by the salivary glands

(iv)

All are true statements
Q-5 

Which statement is TRUE about the oespohagus?

(i)

It connects the mouth to the stomach

(ii)

No digestion takes place in the oesophagus

(iii)

Food moves by peristalsis in the oesophagus

(iv)

All of these are true statements
Q-6 

Which statement is TRUE about the stomach?

(i)

It secretes nitric acid

(ii)

Food in stomach is called chyle

(iii)

Protein digestion starts in the stomach

(iv)

From stomach food moves to oesophagus
Q-7 

Which of the following is not part of the small intestine?

(i)

Ileum

(ii)

Duodenum

(iii)

Appendix

(iv)

Jejunum
Q-8 

Food in the small intestine is called:

(i)

Chyme

(ii)

Chyle

(iii)

Bolus

(iv)

Faeces
Q-9 

The end product of fat digestion is:

(i)

Amino acid

(ii)

Lactose

(iii)

Maltose

(iv)

None of these
Q-10 

The end product of protein digestion is:

(i)

Glycerol

(ii)

Maltose

(iii)

Amino acid

(iv)

Fatty acid
Q-11 

The main site for absorption of nutrients is:

(i)

Rectum

(ii)

Ileum

(iii)

Large intestine

(iv)

Oesophagus
Q-12 

The function of the liver is:

(i)

To produce bile

(ii)

To produce urea

(iii)

To convert excess glucose into glycogen

(iv)

All of these
Q-13 

Which statement is TRUE about the ileum?

(i)

Its inner lining has folds called villi

(ii)

It is the main site for nutrient absorption

(iii)

It is the main site for assimilation

(iv)

(a) and (b) are true statements
Q-14 

The C-shaped upper part of the small intestine is called:

(i)

Jejunum

(ii)

Duodenum

(iii)

Ileum

(iv)

Appendix
Q-15 

Movement of digested food in the large intestine is by a process called:

(i)

Egestion

(ii)

Peristalsis

(iii)

Assimilation

(iv)

None of these
Q-16 

Which of these gases is associated with respiration?

(i)

Oxygen

(ii)

Carbon dioxide

(iii)

Nitrogen

(iv)

Water vapour
Q-17 

Which of these is NOT a part of the respiratory tract?

(i)

Lungs

(ii)

Trachea

(iii)

Alveolus

(iv)

Pharynx
Q-18 

Which is a function of the mucus in the nose?

(i)

Helps to perceive smell

(ii)

Warms the air passing through the nose

(iii)

Traps harmful organisms

(iv)

None of these
Q-19 

The common chamber for food and air is:

(i)

Pharynx

(ii)

Larynx

(iii)

Nasal chamber

(iv)

Oesophagus
Q-20 

Cilia are absent in:

(i)

Trachea

(ii)

Bronchus

(iii)

Bronchioles

(iv)

Alveolus
Q-21 

Function of the C-shaped rings of cartilage is:

(i)

To keep unwanted particles out of the trachea

(ii)

Strengthen the walls of the bronchi

(iii)

Keep the lumen of the trachea open

(iv)

Both (b) and (c) are correct
Q-22 

Path of respiratory gas in the respiratory tract:

(i)

Nose --> Pharynx --> Larynx --> Trachea --> Bronchus --> Lung --> Bronchiole --> Alveolus

(ii)

Nose --> Larynx --> Pharynx --> Trachea --> Bronchus --> Bronchiole --> Alveolus

(iii)

Nose --> Pharynx--> Larynx --> Trachea --> Bronchus --> Bronchiole --> Alveolus

(iv)

Nose --> Pharynx --> Larynx --> Trachea --> Bronchiole --> Bronchus --+ Alveolus
Q-23 

The act of breathing in air is called:

(i)

Inspiration

(ii)

Expiration

(iii)

Exhalation

(iv)

(b) and (c) are true
Q-24 

Lungs are protected by:

(i)

Pleural membrane

(ii)

Rib cage

(iii)

Pericardium

(iv)

(a) and (b) are true
Q-25 

During inspiration:

(i)

Diaphragm is flat

(ii)

Thoracic cavity is increased

(iii)

Ribs are raised outward

(iv)

All of these
Q-26 

The right lung has -------------------------- lobes

(i)

One

(ii)

Two

(iii)

Three

(iv)

Four
Q-27 

Which is a characteristic of the alveolus?

(i)

Thin, single layered wall

(ii)

C-shaped cartilage absent

(iii)

Wall is lined with moisture

(iv)

All these are true statements
Q-28 

The muscular flap at the opening into the pharynx is called :

(i)

Valve

(ii)

Sphincter muscle

(iii)

Epiglottis

(iv)

None of these
Q-29 

Which of these is not a disease of the respiratory system?

(i)

Asthma

(ii)

Bronchitis

(iii)

Pneumonia

(iv)

Malaria
Q-30 

At the time of swallowing food, the epiglottis:

(i)

Shuts the opening of the oesophagus

(ii)

Shuts the opening of the trachea

(iii)

Remains open

(iv)

None of these
Q-31 

Which of the following is NOT a part of blood?

(i)

Plasma

(ii)

Lymph

(iii)

Platelets

(iv)

White blood cells
Q-32 

Which of the following is a part of the circulatory system?

(i)

Blood vessels

(ii)

Heart

(iii)

Blood

(iv)

All of these
Q-33 

Double circulation means that:

(i)

Blood flows in closed vessels

(ii)

Blood remains in the tissues

(iii)

Blood flows through the heart twice

(iv)

(a) and (c) are correct
Q-34 

Which of the following is a chamber of the heart?

(i)

Aorta

(ii)

Ventricle

(iii)

Atrium

(iv)

Both (b) and (c)
Q-35 

Which statement is true for arteries?

(i)

Thin walled

(ii)

Inelastic

(iii)

Has valves

(iv)

Thick, muscular walls
Q-36 

Oxygen-rich blood flows from:

(i)

Left ventricle to whole body

(ii)

Lungs to left atrium

(iii)

Right ventricle to lungs

(iv)

Both (a) and (b) are correct
Q-37 

Select the correct sequence:

(i)

Artery --> Arteriole --> Venule --> Capillaries --> Vein

(ii)

Arteriole--> Artery--> Capillaries--> Vein --> Venule

(iii)

Artery --> Arteriole --> Capillaries --> Venule --> Vein

(iv)

Artery --> Arteriole --> Vein --> Capillaries --> Venule
Q-38 

The red colour of blood is due to the pigment:

(i)

Chromoplast

(ii)

Haemoglobin

(iii)

Both (a) and (b)

(iv)

None of these
Q-39 

Blood group AB+ can give blood to:

(i)

Blood group A+

(ii)

Blood group B +

(iii)

Blood group AB+

(iv)

All of these
Q-40 

Which is NOT a function of blood?

(i)

Protect body against infection

(ii)

Transport gases, nutrients and hormones

(iii)

Regulate body temperature

(iv)

Digest food
Q-41 

Which is NOT a characteristic of white blood cells?

(i)

Phagocytosis

(ii)

Large nucleus

(iii)

Disc shape

(iv)

Amoeboid movement
Q-42 

Which is a function of platelets?

(i)

To help in the clotting of blood

(ii)

To regulate body temperature

(iii)

To produce antibodies

(iv)

None of these
Q-43 

The fluid part of blood is called:

(i)

Serum

(ii)

Plasma

(iii)

Platelet

(iv)

None of these
Q-44 

Which of these is a disease of the heart?

(i)

Asthma

(ii)

Malaria

(iii)

Pneumonia

(iv)

Coronary thrombosis
Q-45 

A healthy diet to control high blood pressure:

(i)

Must be low in salt

(ii)

Must consist of fruits and vegetables

(iii)

Must be low in fat

(iv)

All of these
Chapter-6   Adaptation
Q-1 Define the following terms and give two examples of each:
(i) Ecosystem
(ii) Habitat
Q-2 Answer the Following
(i) List the three factors that affect the habitat and give two examples of each.
(ii) What is meant by adaptation?
(iii) Give one term for plants that grow in water or wet places.
(iv) Name two aquatic plants.
(v) What is a mesophyte? Give two examples of plants that are mesophytes.
(vi) Mention three features that enables a fish to survive in an aquatic habitat.
(vii) What is a phylloclade? Give one example.
(viii) Why do desert plants have long tap roots?
(ix) Explain how the foot of the camel is adapted for life on desert.
(x) Explain how the following parts are modified to an aquatic habitat: (i) Epidermis (ii) Root (iii) Stem (iv) Leaves (v) Internal tissues
(xi) What is an epiphyte? Name one epiphyte.
(xii) State the role of the velamen tissue in epiphytes.
(xiii) Why do some plants develop breathing roots? What are such breathing roots called?
(xiv) Why do some plants develop stilt roots?
(xv) Birds and bats are said to be volant. Explain.
(xvi) Mention three natural causes of habitat alteration.
(xvii) Mention three ways human activities lead to habitat alteration.
(xviii) Mention the possible consequences of habitat alteration.
Q-3 What is a xerophyte? Give an example of a xerophyte in which:
(i) The leaves are reduced to spines
(ii) The leaves become succulent
(iii) The leaves are reduced in size
(iv) The leaves are reduced to scales
Q-4 State the advantage of the following features:
(i) Streamlined body
(ii) Swim bladder in a bony fish.
Q-5 With respect to coniferous trees, explain why:
(i) The trees are conical in shape.
(ii) The leaves are needle-shaped .
(iii) The trees grow tall, straight and slender .
Q-6 Give one example of a plant which is/has:
(i) A partial parasite
(ii) A total parasite
(iii) Breathing roots
(iv) Prop roots
(v) Stilt roots
Q-7 Explain the significance of the following modifications in birds:
(i) Presence of feathers
(ii) Many bones of the skeleton are fused
(iii) Hollow bones
(iv) Lungs with air sacs
Multiple Choice Questions
Q-1 

Adaptation is the ability of an organism to:

(i)

Adjust to its environment

(ii)

Change skin colour to blend in with its surroundings (camouflage)

(iii)

Migrate to warmer places to cope with severe winters

(iv)

All of the above
Q-2 

Which of the following is a biotic component of the habitat?

(i)

Soil

(ii)

Air

(iii)

Rocks

(iv)

Earthworm
Q-3 

Which of the following is an abiotic component of the habitat?

(i)

Water

(ii)

Fungi

(iii)

Rat

(iv)

Sunflower
Q-4 

Edaphic factors of the habitat:

(i)

Rivers

(ii)

Mountains

(iii)

Soil types

(iv)

All of these
Q-5 

Which feature is an adaptation in plants for aquatic habitat?

(i)

Water proof leaves

(ii)

Slender stems

(iii)

Light seeds

(iv)

All of these
Q-6 

Which feature is an adaptation in animals for aquatic habitat?

(i)

Streamlined body

(ii)

Fins, flippers

(iii)

Gills for breathing

(iv)

All of these
Q-7 

Which feature is an adaptation in plants for desert habitat?

(i)

Leaves reduced to spines

(ii)

Thick, waxy cuticle

(iii)

Flat and green stems

(iv)

All of these
Q-8 

Which feature is an adaptation in camels for desert habitat?

(i)

Padded hooves

(ii)

Joined toes

(iii)

Hump stores water

(iv)

All of these
Q-9 

Which feature is an adaptation in plants for mountain habitat?

(i)

Flat, broad leaves

(ii)

Trees with spreading branches

(iii)

Needle shaped leaves

(iv)

Bright, colourful flowers
Q-10 

Which feature is an adaptation in mountain goat for mountain habitat?

(i)

Strong, muscular hind legs

(ii)

Thick, double coat of fur

(iii)

Flexible hooves

(iv)

All of these
Q-11 

Which term is NOT associated with the orchid, Vanda?

(i)

Velamen

(ii)

Partial parasite

(iii)

Total parasite

(iv)

Epiphyte
Q-12 

Which plant is a total parasite?

(i)

Rhizophora

(ii)

Vanda

(iii)

Cuscuta

(iv)

Ivy
Q-13 

Stilt roots are seen in:

(i)

Maize

(ii)

Ivy

(iii)

Banyan

(iv)

Rhizophora
Q-14 

Which is an adaptation in birds for aerial habitat?

(i)

Streamlined body covered with feathers

(ii)

Hollow bones fused to form a rigid frame

(iii)

Powerful breast muscles

(iv)

All of these
Q-15 

Pneumatophores are roots which :

(i)

Give additional support to the plant

(ii)

Help the plant to breathe

(iii)

Help the plant to obtain nutrition

(iv)

None of these
Chapter-7   Health and Hygiene
Q-1 Answer the Following
(i) Distinguish between an infectious and non-infectious disease and give two examples of each.
(ii) Explain briefly two ways by which infectious diseases spread.
(iii) How is malaria transmitted?
(iv) List three ways we can protect ourselves from mosquito bites.
(v) With a view of eliminating mosquitoes, mention how: (a). Their breeding can be controlled. (b). The adult mosquitoes can be killed on a large scale.
Q-2 Give one example of a disease caused by:
(i) Virus
(ii) Bacteria
(iii) Protozoa
(iv) Worms
Q-3 Explain briefly the following terms:
(i) Disease
(ii) Community health
(iii) Hygiene
Q-4 List three ways:
(i) The breeding of flies can be controlled.
(ii) Healthy food standards can be maintained.
(iii) The eyes can be protected from infection.
(iv) Body odour can be prevented.
(v) Teeth can be protected from decay.
Q-5 Explain briefly:
(i) We should cover our mouth and nose while coughing or sneezing.
(ii) The skin must be kept clean.
(iii) Biting of nails must be strictly avoided.
(iv) Eating sweets in between meals should be avoided.
(v) We must wash our hand thoroughly before using it for eating food.
Q-6 Match the item in column A with the appropriate item in column B.
Multiple Choice Questions
Q-1 

A disease may be caused due to:

(i)

Low immunity

(ii)

Infection

(iii)

Dietary deficiency

(iv)

All of these
Q-2 

Which of the following is an infectious disease?

(i)

Rickets

(ii)

Cataract

(iii)

Asthma

(iv)

None of these
Q-3 

Which of the following is NOT an infectious disease?

(i)

Tuberculosis

(ii)

Covid-19

(iii)

AIDS

(iv)

Scurry
Q-4 

The mosquito that transmits malaria is:

(i)

Culex

(ii)

Aedes

(iii)

Female anopheles

(iv)

Both (a) and (b)
Q-5 

Which disease is spread by the housefly?

(i)

Cholera

(ii)

Typhoid

(iii)

Dysentery

(iv)

All of these
Q-6 

Which of the following reduces the risk of infections?

(i)

Drinking boiled water

(ii)

Drinking pasteurized milk

(iii)

Washing hands frequently with soap

(iv)

All of these
Q-7 

Which is a method to prevent mosquito infestation?

(i)

Remove stagnant water from flower pot plates

(ii)

Fumigation with DDT

(iii)

Spray oil on water bodies where mosquitoes breed

(iv)

All of the above
Q-8 

Which is a method to control spread of disease by houseflies?

(i)

Spray DDT

(ii)

Burn garbage

(iii)

Keep food covered

(iv)

All of these
Q-9 

Maintaining food standards means:

(i)

Testing meat for tapeworm infestation

(ii)

Pasteurizing milk

(iii)

Enriching bread with vitamins

(iv)

All of these
Q-10 

Contamination of drinking water can spread;

(i)

Rabies

(ii)

Cholera

(iii)

Typhoid

(iv)

Both (b) and (c)
Q-11 

Which is a part of maintaining personal hygiene?

(i)

Brushing teeth

(ii)

Regular bathing

(iii)

Clean hair and nails

(iv)

All of these
Q-12 

Tapeworm infection is spread by:

(i)

Drinking unpasteurized milk

(ii)

Eating pork which is not properly cooked

(iii)

Drinking contaminated water

(iv)

Not bathing regularly
Q-13 

Lice can be killed by washing hair with shampoo containing:

(i)

Selenium

(ii)

Lindane

(iii)

Aloe vera

(iv)

Onion juice
Q-14 

Practicing good food habit is:

(i)

Eating a balanced diet

(ii)

Washing vegetables before cooking

(iii)

Protecting food from dust, flies and roaches

(iv)

All of these
Q-15 

Care of the eye means:

(i)

Protect eyes from glare of the Sun

(ii)

Proper lighting while reading and writing

(iii)

Avoid excessive viewing of television

(iv)

All of these