Maharashtra State Board Class 5 EVS Environmental Balance Fill in the blanks, True False and Question & Answers.
Fill in the Blanks
1. The variety we see in all living things that belong to a particular area is called the __________ of that place.
2. The surroundings and conditions that affect the life of organisms are together known as their __________.
3. A __________ is formed when each component is food for the next one in a sequence.
4. Plants make their own food in the presence of __________ using water and carbon dioxide.
5. __________ are the main support of every food chain.
6. One living thing can be part of many food chains, giving rise to a __________ in nature.
7. Living things use __________ from the air for breathing and give out carbon dioxide gas.
8. __________ help in the decomposition of plant residue, dead animals, and excreta.
9. When various cycles in the environment go on uninterrupted, __________ gets maintained.
10. Plants use __________ from the air for making their food.
11. The __________ provides a continuous supply of water to living things.
12. Environmental Science studies the __________ between living and non-living things.
13. There are __________ types of living things on the earth.
14. Different kinds of animals, plants and __________ are found in different regions of the earth.
15. For the existence of living things, it is important that __________ is maintained.
Answers
1. biodiversity
2. environment
3. food chain
4. sunlight
5. Plants
6. food web
7. oxygen
8. Micro-organisms
9. environmental balance
10. carbon dioxide
11. water cycle
12. interactions
13. innumerable
14. micro-organisms
15. environmental balance
Multiple Choice Questions
1. What is biodiversity?
a) The number of plants in an area
b) The variety of all living things in a particular area
c) The number of animals only
d) The weather conditions
2. What do plants need to make their own food?
a) Only water
b) Only carbon dioxide
c) Sunlight, water, and carbon dioxide
d) Only sunlight
3. In a food chain, what eats grass and leaves?
a) Birds
b) Grasshopper
c) Worm
d) Tiger
4. What is the most important food in food chains?
a) Animals
b) Plants
c) Water
d) Soil
5. What do living things give out when they breathe?
a) Oxygen
b) Water vapor
c) Carbon dioxide
d) Nitrogen
6. What helps in the decomposition of dead plants and animals?
a) Sunlight
b) Water
c) Micro-organisms
d) Air
7. When one living thing is part of many food chains, it forms a:
a) Food cycle
b) Food web
c) Food pyramid
d) Food group
8. What do plants give out when they make food?
a) Carbon dioxide
b) Water
c) Oxygen
d) Nitrogen
9. Environmental balance is maintained by:
a) Only food chains
b) Only water cycle
c) Various cycles and food chains working together
d) Only plants
10. What provides continuous supply of water to living things?
a) Rivers
b) Water cycle
c) Rain
d) Lakes
11. The environment includes:
a) Only living things
b) Only non-living things
c) Both living and non-living things
d) Only plants
12. What eats grasshoppers in the food chain mentioned?
a) Worms
b) Plants
c) Birds
d) Grass
13. For how long has environmental balance been maintained?
a) Hundreds of years
b) Thousands of years
c) Tens of years
d) Millions of years
14. What studies the interactions between living and non-living things?
a) Biology
b) Chemistry
c) Environmental Science
d) Physics
15. What happens when substances from dead plants and animals decompose?
a) They disappear
b) They become harmful
c) They get added to soil and help plant growth
d) They pollute the environment
Answers
1. b) The variety of all living things in a particular area
2. c) Sunlight, water, and carbon dioxide
3. c) Worm
4. b) Plants
5. c) Carbon dioxide
6. c) Micro-organisms
7. b) Food web
8. c) Oxygen
9. c) Various cycles and food chains working together
10. b) Water cycle
11. c) Both living and non-living things
12. c) Birds
13. b) Thousands of years
14. c) Environmental Science
15. c) They get added to soil and help plant growth
Question and Answer
1. What is biodiversity?
Answer: Biodiversity is the variety we see in all the living things that belong to a particular area.
2. What is a food chain?
Answer: A food chain is a sequence where each component is food for the next one, like plants → worm → grasshopper → bird.
3. Why are plants called the most important food in food chains?
Answer: Plants are the most important because they make their own food and are the main support of every food chain.
4. What is environmental balance?
Answer: Environmental balance is maintained when various cycles in the environment and food chains work together uninterrupted.
5. How do plants make their food?
Answer: Plants make their own food in the presence of sunlight using water and carbon dioxide from the air.
6. What is the difference between a food chain and a food web?
Answer: A food chain is a single sequence of who eats whom, while a food web is formed when one living thing is part of many food chains.
7. What role do micro-organisms play in the environment?
Answer: Micro-organisms help in the decomposition of plant residue, dead animals, and excreta, adding nutrients back to the soil.
8. How is oxygen maintained in the environment?
Answer: Living things use oxygen for breathing and give out carbon dioxide. Plants use carbon dioxide to make food and give out oxygen, creating a cycle.
9. What is an environment?
Answer: The environment includes the surroundings and conditions that affect the life of organisms, including sunlight, air, water, soil, plants, and animals.
10. Why is it important to maintain environmental balance?
Answer: Environmental balance is important for the existence of living things because it ensures food chains continue and all cycles work properly.
11. How do scientists study biodiversity?
Answer: Scientists make observations in different conditions like day and night, different seasons, and use special devices to observe living things at great heights, depths, and micro-organisms.
12. What happens when a link in a food chain is lost?
Answer: If one link in a food chain is lost, the food chain cannot last and may break down.
13. How does the water cycle help living things?
Answer: The water cycle provides a continuous supply of water to all living things.
14. Give an example of interaction between living and non-living things.
Answer: Plants (living) use sunlight, water, and carbon dioxide (non-living) to make food, showing interaction between living and non-living components of the environment.
