Chapter 9
The Living Organisms and Their Surroundings
1. What is a habitat?
Ans: The place where an organism live is called his habitat.
2. How are cactus adapted to survive in a desert?
Ans: Cactus are adapted to survive in a desert as they have
(i) No leaves or spiny leaves to prevent water loss through transpiration.
(ii) Stem is modified and it performs photosynthesis and conserves water.
(iii) Their roots go very deep into the soil for absorbing water.
3. Fill in the blanks:
(a) The presence of specific features which enables 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 _________________ habitats.
(c)The habitats of plants and animals that live in water are called ____________________ habitats.
(d) Soil, water and air are the____________ factors of a habitats.
(e) Changes in our surroundings that make us respond to them are called
Ans:
(a) adaptation
(b) terrestrial
(c) aquatic
(d) abiotic
(e) stimuli
4. Which of the things in the following list are non-living?
Plough, Mushrooms, Sewing machine, Radio, Boat, Water, Hyacinth, Earthworm.
Ans: Plough, Sewing machine, Radio, Boat and water are non-living.
5. Give an example of a non-living thing which shows any two characteristics of living thing.
Ans: Example of non-living thing is cloud which shows following two characteristics of living things:
(i) It grows in size
(ii) It shows movement.
6. Which of the following non-living things were once part of a living thing?
Butter, Leather, Soil, Wool, Electric Bulb, Cooking Oil, Salt, Apple, Rubber.
Ans: Butter, Leather, Wool, Cooking oil, Apple and Rubber are the non-living things which were once part of a living thing.
7. List the common characteristics of living things.
Ans: Some common characteristics of living things are:
Ans: In grasslands habitats, there are few trees or places for animals to hide. When their enemy attacks they have to run faster so as to reach a safe place. If they fail, they lose their life. So, the speed is very important for survival of grassland animals.
Ans: The place where an organism live is called his habitat.
2. How are cactus adapted to survive in a desert?
Ans: Cactus are adapted to survive in a desert as they have
(i) No leaves or spiny leaves to prevent water loss through transpiration.
(ii) Stem is modified and it performs photosynthesis and conserves water.
(iii) Their roots go very deep into the soil for absorbing water.
3. Fill in the blanks:
(a) The presence of specific features which enables 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 _________________ habitats.
(c)The habitats of plants and animals that live in water are called ____________________ habitats.
(d) Soil, water and air are the____________ factors of a habitats.
(e) Changes in our surroundings that make us respond to them are called
Ans:
(a) adaptation
(b) terrestrial
(c) aquatic
(d) abiotic
(e) stimuli
4. Which of the things in the following list are non-living?
Plough, Mushrooms, Sewing machine, Radio, Boat, Water, Hyacinth, Earthworm.
Ans: Plough, Sewing machine, Radio, Boat and water are non-living.
5. Give an example of a non-living thing which shows any two characteristics of living thing.
Ans: Example of non-living thing is cloud which shows following two characteristics of living things:
(i) It grows in size
(ii) It shows movement.
6. Which of the following non-living things were once part of a living thing?
Butter, Leather, Soil, Wool, Electric Bulb, Cooking Oil, Salt, Apple, Rubber.
Ans: Butter, Leather, Wool, Cooking oil, Apple and Rubber are the non-living things which were once part of a living thing.
7. List the common characteristics of living things.
Ans: Some common characteristics of living things are:
- Growth
- Movement
- Reproduction
- Respiration
- Responsiveness
- Excretion
Ans: In grasslands habitats, there are few trees or places for animals to hide. When their enemy attacks they have to run faster so as to reach a safe place. If they fail, they lose their life. So, the speed is very important for survival of grassland animals.