V Class - Science - I Term

Class : V Term – 1 sub : Science

Chapter – I
PLANTS AND ANIMALS

1. Fill in the blanks:
Plants are called producers
During respiration, animals take in oxygen
Plants take in Carbondioxide from the air during photosynthesis.
During night, the plants give out Carbondioxide
Growth in plants is continuous
Most plants reproduce with the help of seeds.
Plants respond to stimuli slowly

2. Write ‘T’ for true and ‘F’ for false.
Plants have special sense organs. [ F ]
Green plants are autotrophs. [ T ]
Animals are slower in responding to stimuli. [ F ]
Animals generally develop new body parts when the old ones get damaged. [ F ]
Animals eat plants or other animals. [ T ]

3. Choose the correct answer to fill in the blanks.
The tiny pores on the leaves are called stomata. ( stomata / stalk )
The gas produced during photosynthesis is oxygen ( carbondioxide / oxygen )
Organs through which fish breathe are called gills ( fins / gills )
The main sources required for the preparation of food are carbondioxide, water and sunlight. ( carbondioxide, water and sunlight / sense organs )
Exchange of gases takes place in respiration ( reproduction / respiration )

4. Match the following:-
A B
a. Stomata ( ) 1. tiny holes in leaves.
b. Starch ( ) 2. food prepared in leaves
c. Chlorophyll ( ) 3. green pigment
d. Animals ( ) 4. consumers
e. Plants ( ) 5. producers.

5. Give reason for the following:-
a. Animals depend on plants or other animals for food.
Ans. Animals cannot prepare their food like plants as they don’t have chlorophyll.
Therefore they are called heterotrophs as they depend on plants or other
animals for food.

c. Plants prepare their own food.
Ans. Plants can prepare their own food as they have a green pigment called chlorophyll which traps the solar energy and convert it into food.

6. Answer the following questions:-
a. Mention the common features of plants and animals.
Ans. The common features of plants and animals are
a. They respire.
b. They respond to external stimuli.
c. They reproduce.
d. They are made up of cells and grow in size.

b. Describe the differences between plants and animals based on their.
i) Movement ii) Growth iii) Respiration.
Ans. Difference between plants and animals
Plants
Animals
Movement
Plants do not move on their own from one place to other.
Animals move from one place to another. Animals use their limbs to move from one place to another.
For example:- Man walks, bird flies, fish swim and reptiles crawl.
Growth
In plants, the tips of roots and stems grow. Plants lose old leaves and branches and grow new leaves and branches.
Animals stop growing when they become adult animals. Animals can not grow or develop new parts of their buds if the old parts are damaged.
Respiration
Plants breathe through tiny pores on the surface of their leaves called stomata.
Animals have special organs for breathing like lungs, gills and air holes etc.

c. Why are animals called consumers ?
Ans. Animals are called consumers because they consume (eat) plants or other
animals.

d. What is meant by reproduction ? How do animals reproduce?

Ans. The process of producing young ones of their own kind by living beings is called reproduction.
Most of the animals reproduce either by laying eggs or by giving birth to
young ones.

e. How do animals respond to stimuli?
Ans. Animals respond very quickly to almost all stimuli such as light, sound, heat
taste or touch, because they have specialized sense organs.


CHAPTER – II
ADAPTATION IN PLANTS AND ANIMALS

1. Fill in the blanks :-
a. Examples of plants that remain constantly immersed in water are vallisneria and
hydrilla.
b. Some big fish like whale and the dolphin do not have gills.
c. Plants respire through stomata
d. Birds have a light body.
e. Camels have a hump to store fats.

2. State T for true and F for false.
a. Desert animals like the camel have thick skin to bear the extreme heat and cold of
the desert. [ T ]
b. Xerophytes are commonly found in water. [ F ]
c. Leaves are reduced to spines in hydrophytes. [ F ]
d. Camels and lizards are found in mountainous regions. [ F ]
e. Polar bears and yaks are commonly seen in desert. [ F ]

3. Match the following:-
A B
1. Fins ( c ) a. frog
2. Padded feet ( b ) b. camel
3. Webbed feet ( a ) c. fish
4. Lotus ( e ) d. stem prepares food
5. Cactus ( d ) e. Wax-coated surface

4. Give reasons for the following :-
a. Water does not stick to the surface of a lotus leaf.
Ans. Water does not stick to the surface of a lotus leaf because the leaf has a waxy
coating.
b. Camels can survive without drinking water for days together.
Ans. Camels can survive without drinking water for many days because it stores large quantities of water in the blood.
c. A cactus has spines or thorns instead of leaves.
Ans. A cactus has spines instead of leaves to reduce loss of water through leaves.

5. Give two examples of each of the following :-
Desert plant : Cactus & date palm.
Aquatic plant : Lotus & hydrilla
Aquatic animal : Fish, shark & star fish
Desert animal : Camel & desert snake Trees that grow
In cold climate : Pine and oak Hydrophytes that
Float on water : Pistia, water hyacinth I
nsectivorous plants : Pitcher plant & Venus flytrap.
Animals that can camouflage ` : Chameleon and stick insect.

6. Answer the following:-
a. Define adaptation.
Ans. The way animals and plants change in order to adjust to their environment is
called adaptation.
b. How has the frog adapted itself both on land and in water ?
Ans. Frog has adapted itself to live both on land as well as in water as it has long hind legs and webbed toes.

c. How does the cactus survive in the desert ?
Ans. The cactus survives in the desert as
1. It has long roots to absorb water from the deeper layers of the soil.
2. The stems are thick and fleshy to store water.
3. The leaves are modified into thorns and spines to reduce loss of water.
4. The stomata are sunken.

d. List the characteristics of the body of a bird that helps it in flying.
Ans. The characteristics of the body of a bird that helps it in flying are:-
1. Light and hollow bones.
2. Fore limbs are modified into wings which have flight muscles.
3. The chest muscles are strong which push the air down as it flies.
4. Body covered with feathers.
5. Tail feathers help to change the direction.

e. How is a fish adapted to its habitat ?
1. The body of the fish is stream lined (boat like).
2. It uses its fins for swimming which work like the oars of a boat.
3. It breathes with the help of gills.
4. Tail of fish is used to change the direction.

f . How is the camel adapted to the desert life ?
Ans. The camel is adapted to the desert life as
1. The body of the camel is covered with thick skin, which prevents loss of
water.
2. The hump of the camel stores food in the form of fat.
3. It stores excess water in the blood.
4. It has padded feet which help to walk on hot sand surfaces.
5. Urination is very less.

g. Describe the adaptations of mountain animals to their habitat.
Ans. Mountain animals are adapted to their habitat in the following way.
1. Body is covered with thick coats of wool or fur on their bodies.
2. Their skin is thick and made up of layers of fat, which help them to protect
from the cold.
3. They have very heavy pads of fur on the soles of their feet.
4. In polar region the skin of the animals is white which helps them to mimic
with the snow.


Unit - III
Reproduction in Plants

1. Answer the following briefly:
a. How do plants reproduce ?
Ans. Plants reproduce in different ways:-
1. Some plants reproduce through their stem. Ex:- Potato and ginger.
2. Flowering plants reproduce through seeds. Ex. Mango, Beans etc.
3. Some of the plants reproduce through spores. Ex. Ferns and Mushroom.

b. What is germination ?
Ans. The process by which a seed grows into a seedling or into a young plant is
called germination.

c. What are the conditions needed for seed germination ?
Ans. The conditions needed for seed germination are favourable environment like
moisture, air, suitable temperature and the right duration of light and
darkness.

d. Describe the structure of a seed.
Ans.
1. The seed is covered by a seed coat.
2. The two thick fleshy structures of a seed are called cotyledons or seed leaves.
3. The embryo (baby plant) lies between the seed leaves.
4. The embryo is made up of the plumule (baby shoot) and the radicle (baby
root).
5. There is a small hole in the seed known as micro-pyle.

2. Fill in the blanks:-
a) The baby plant inside a seed is called embryo.
b) The seed leaves are called cotyledons.
c) The development of a seed into seedlings is called germination.
d) A seed contains food for the baby plant.
e) The plumule of the baby plant will form the shoot.

3. Say T for true and F for false.
a. Air, water, light and the correct temperature are required for seed germination. [ T]
b. Water is not necessary for germination. [ F ]
c. All seeds germinate uniformly. [ F ]
d. The cotyledons are the seed leaves. [ T ]
e. A plant produce many seeds. [ T ]
f. The very young plant is called the embryo. [ T ]
g. The plumule grows into the root. [ F ]
h. The radicle grows into the stem. [ F ]
i. The small opening in a seed is the embryo. [ F ]
j. A sapling grows into the seedlings. [ F ]

4. Match the following:-
A B
a. Seed leaves i) cotyledon
b. Baby plant ii) Embryo
c. Shoot system iii) plumule
d. Root system iv) radicle
e. Air hole v) micropyle
f. Seed vi) store food.

5. Describe an experiment to find out the factors necessary for germination.
Ans. Experiment
Objective / Aim:- To find the factors or conditions necessary for germination.
Procedure :-
1. Take three bean seeds.
2. Attach them to a glass rod with rubber bands at equal intervals.
3. Place the glass rod in a beaker, half filled with water.
4. Place the rod in such a way that bean seed at the bottom is fully immersed in
Water, the bean seed in the middle is partially immersed, and the seed at the
top is not in contact with water.
5. After a few days, only the seed which is partly immersed in water and partly
in the air germinates.
6. The seed at the top and bottom do not germinate as they do not get proper
water and air respectively.
7. The seed in the middle gets proper air, water and has the right
temperature to germinate.

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