Q1. What is a habitat?

Ans :- The surrounding where plants and animals live, survive and reproduce is called their habitat.

Q2. How are cactus adopted to survive in desets?

Ans :- Adaptation of cactus in desert:
(i) The Leaf is modified to spine to reduce transpiration.
(ii) Photosynthesis is carried by the stems.
(iii) The stem is covered by thick waxy layer that helps retain water.
(iv) Cactus have roots that go very deep into the soil for absorbing water.

Q3. Fill in the blanks:
(a) The presence of specific features, which enable a plant or animal to live in a particular habitat, is called —————.
(b) The habitats of the plants or animals that live on land are called ————–habitat.
(c) The habitats of plants and animals that live in water are called ——- habitat.
(d) Soil, water and air are the ————- factors of a habitat.
(e) Changes in our surrounding that make us responds to them, are called ——.

Ans :-

(a) The presence of specific features, which enable a plant or animal to live in a particular habitat, is called adaptation.
(b)The habitats of the plants or animals that live on land are called terrestrial habitat.
(c) The habitats of plants and animals that live in water are called aquatic habitat.
(d) Soil, water and air are the abiotic factors of a habitat.
(e) Changes in our surrounding that make us responds to them are called stimuli

Q4. Which of the things in the following list are non-living?
Plough, Mushroom, Sewing machine, Radio, Boat, Water, Hyacinth, Earthworm.

Ans :- Plough, Sewing machine, Radio, Boat

Q5. Give an example of non-living thing, which shows any two characteristics of living things.

Ans :- Example- Car
Two characteristic features-
(i) Moves
(ii) Need oxygen

Q6. Which of the non-living things listed below were once parts of living thing?

Butter, Leather, Soil, Wool, Cooking gas, Apple, Rubber.

Ans :- Butter, Leather, Wool, Cocking oil, Apple Rubber

Q7. List the common characteristic of living things.

Common characteristic of living things.
(i) Growth
(ii) Need food
(iii) Respiration
(iv) Response to stimuli
(v) Excretion
(vi) Reproduction
(vii) Movement

Q8. 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 grasslands habitats)

Ans :- There are few trees for animals to hide. Tiger eats deer. To survive, the deer has to
run faster than tiger. Thus speed is important for survival in grassland for animals.