Question

1. Differentiate between adaptation and habitat.
Adaptation Habitat
The process of changing to suit the environment
is called adaptation.
The natural home of a plant or animal is called
its habitat.
2. Mention one adaptation each of- (a) desert plants, (b) marshy plants, (c) aquatic Plants.
a) Desert plants- They prevent the loss of water (By storing water in its green thick stem - E.g.-
Cactus)
b) Marshy plants- Breathing roots.
c) Aquatic plants- Spongy bodies and able to float easily.
3. How can you show that sunlight is necessary for plants to make food?
Take a potted plant with green leaves. Select a big leaf from it. Take a thin strip of black chart paper.
Place the strip in the middle of the leaf and wrap it around the leaf Now leave the plant outdoors for
24 hours. After that remove the black strip and pluck the leaf. The part which was covered with chart
paper would not become blue black after the starch test.
4. Define- Insectivorous plants.
Some plants attract, capture, kill and digest insects. Such plants are called insectivorous plants.
5. Explain the process by which leaves make food for the plants. Explain the flow of energy between living
things.
Plants take in carbon dioxide from air and water from soil. The leaves of green plants contain a green
substance called chlorophyll. Chlorophyll traps sunlight. Green leaves use the energy of sunlight to
prepare food from carbon dioxide and water. This process is called photosynthesis.
Green plants make their own food through photosynthesis. The sun provides the energy for plants to
make their food. Animals and human beings either directly or indirectly depend on plants for food. In
this manner flow of energy of the sun flows to plants and then to animals and human beings.
6. Name the different types of nutrients with two examples of each of them.
NUTRIENTS EXAMPLES
Carbohydrates Rice and Wheat
Fats Oil and Butter
Proteins Milk and Eggs
Vitamins Vegetables and Fruits
Minerals Leafy vegetables and Fruits
7. State two ways of preservation that protect food from getting rotten.
1.Freezing- If food is stored in a refrigerator, it can be preserved for many days.
2.Canning-Some items such as juices and jams come in cans. They are sealed in cans after removing
moisture from them.
8. List two safety rules each for- (a) at home, (b) on the beach, (c) at school.
At Home- 1. Immediately wipe any liquid that has been spilled on the floor.
2. do not leave your toys and other things lying around on the floor.
On the beach- 1. Do not swim in the water alone.
2. do not go too far into the water.
At school- 1. Never throw objects such as pencils, pens or rulers at each other.
2. do not climb on chairs and desks.
9. What should you do if a dog is walking towards you?
If a dog is walking towards you, do not run. Stay calm and call for an adult.
10. Differentiate between uniforms and traditional dresses.
The clothes worn by school children, postmen, policemen and nurses are called uniforms whereas
traditional clothes at the clothes worn by the people of a state.
11. List any two ways by which we can look after our clothes.
Two ways by which we can look after our clothes are1. Wash the clothes regularly.
2. Dry the clothes properly in sunlight, and then iron them.
12. Define- environment. Name the things it includes.
Environment is comprised of all living and non-living things that occur naturally on the Earth.
It includes human beings, animals, plants, mountains, rivers, soil, etc.
13. Explain how human beings and animals depend on the environment for their needs.
Human beings and animals need oxygen to breathe and food to eat, which they get from plants.
Animals breathe out carbon dioxide, which is used by plants to make food. So human beings and
animals depend on the plants for their survival.
14. What effect does water pollution have on plants and animals?
Water pollution is harmful for both plants and animals. Plants die if polluted water reaches their roots.
Harmful substances present in polluted water decrease the amount of oxygen

Answer 1

Answer:

Habitat = It is a natural home of a plant or a animal .

adaptation = The presence of specific feature and habits which able a plant or an animal to live in a particular habitat, is called adaptation