NCERT Solutions for Class-6 Science Chapter-9 The Living Organisms and their Surroundings

NCERT TEXTBOOK EXERCISES

Question 1. What is a habitat?
Answer: The surroundings where plants and animals live are called their habitat.

Question 2. How are cactus adapted to survive in a desert?
Answer: The plants growing in deserts are adapted to prevent water loss for their survival, for example, cactus:
1. it has no leaves just to prevent water loss through transpiration.
2. the stem is modified in such a way that it performs photosynthesis.
3. the root system is well-developed and grows deep in search of water.

Question 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 _______.
(b) The habitats of the plants and 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 surroundings that make us respond to them, are called _______.
Answer:
(a) Adaptation
(b) Terrestrial
(c) Aquatic
(d) Abiotic
(e) Stimuli

Question 4. Which of the things in the following list are non-living? Plough, Mushroom, Sewing machine, Radio, Boat, Water hyacinth, Earthworm.
Answer: In this list, plough, sewing machine, radio, and boat are non-living.

Question 5. Give an example of a non-living thing, which shows any two characteristics of living things.
Answer:
1. Moving of bus or car – Movement is characteristic of living things.
2. Growing in the size of clouds – Growth is the characteristic of living things.

Question 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: Butter, Leather, Wool, Cooking oil, Apple and Rubber are the non-living things from the list which were once the part of a living thing.

Question 7. List the common characteristics of living things.
Answer: The common characteristics of living things are :
1. They all need food.
2. They all show growth.
3. They all respire.
4. They all respond to stimuli.
5. They all reproduce their own kind.
6. They all move.

Question 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: The speed of animals in the grasslands helps them to run away from predators.