1. What is a habitat?
Answer:
A place where the living organism lives are called a habitat. Habitat provides all the necessary things such as food, water, air, a shelter for the survival of the organism.
Habitat can be:
- Terrestrial Habitat such as forest, grassland, desert, plain
- Aquatic Habitat such as lake, river, ocean
2. How are cactus adapted to survive in a desert?
Answer:
Cactus is a plant of the desert ecosystem/Habitat.
The following way cactus adapted in the desert:
- The leaf-like structure in Cactus works both for stem and leaves.
- Small leaf help to reduce transpiration[ loss of water]
- Thick waxy layer help to retain water in the tissues.
- The root of the cactus goes very deep into the soil to absorb the water.
3. Fill up the blanks
(a) The presence of specific features, which enable a plant or an animal to live in a particular habitat, is called Adaptation.
(b) The habitats of the plants and animals that live on land are called a terrestrial habitats.
(c) The habitats of plants and animals that live in water are called an aquatic habitats.
(d) Soil, water, and air are the —abiotic——— factors of a habitat.
(e) Changes in our surroundings that make us respond to them, are called Stimuli.
4. Which of the things in the following list are nonliving?
Plough, Mushroom, Sewing machine, Radio, Boat, Water hyacinth, Earthworm
Answer:
The following are nonliving things:
- Plough
- Sewing machine
- Radio
- Boat
5. Give an example of a non-living thing, which shows any two characteristics of living things.
Answer:
- Car is non-living, but it moves and also take fuel as food.
6. Which of the non-living things listed below, were once part of a living thing?
Butter, Leather, Soil, Wool, Electric bulb, Cooking oil, Salt, Apple, Rubber
Answer:
The following are:
- Butter
- Leather
- Wool
- Cooking Oil
- Apple
- Rubber
7. List the common characteristics of living things.
Answer:
The following are features of a living organism:
- Adaptation to the surrounding environment
- Reproduction
- Growth
- Stimuli
- Respiration
- All living organism takes food
- They excrete
8. Explain, why speed is important for survival in the grasslands for animals that live there. (Hint: There are few trees or places for animals to hide in grassland habitats.)
Answer:
There are very little tree and other safe places to hide the prey, that is why speed matter to the survival of the animal in the grassland habitat. Survival of faster runner animals is more as they will able to reach the safer place quicker than the predator.
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