MEDIUM
10th CBSE
IMPORTANT
Earn 100

Can the organisms of any trophic level be removed without causing any damage to the ecosystem? Will the impact of removing all the organisms in a trophic level be different for different trophic levels?

Important Questions on Our Environment

EASY
10th CBSE
IMPORTANT
Science for Tenth Class Part - 3 Biology>Chapter 5 - Our Environment>Short Answer Type Questions>Q 27

Consider the food chain:
Grass →Deer →Lion

What will happen if all the lions are removed from the above food chain?

MEDIUM
10th CBSE
IMPORTANT
Science for Tenth Class Part - 3 Biology>Chapter 5 - Our Environment>Short Answer Type Questions>Q 28
The number of malaria patients in a village increased tremendously when many frogs were exported from the village. What could be the cause for it?
MEDIUM
10th CBSE
IMPORTANT
Science for Tenth Class Part - 3 Biology>Chapter 5 - Our Environment>Short Answer Type Questions>Q 29
How does a biodegradable waste differ from a non-biodegradable waste? Give two examples of non-biodegradable wastes which pollute our environment.
MEDIUM
10th CBSE
IMPORTANT
Science for Tenth Class Part - 3 Biology>Chapter 5 - Our Environment>Short Answer Type Questions>Q 30
Which of the following are biodegradable and which non-biodegradable?
Glass bottle, Paper, Ball point pen refill, Hay, DDT, Wheat, Cake, Wood, Polythene bag, Jute bag, Cotton cloth, Grass, Vegetable peels
MEDIUM
10th CBSE
IMPORTANT
Science for Tenth Class Part - 3 Biology>Chapter 5 - Our Environment>Short Answer Type Questions>Q 31
(a) Describe an activity to show that while the paper is biodegradable but plastic (say, polythene) is non-biodegradable.
(b) Explain why some materials are biodegradable but some are non-biodegradable.
MEDIUM
10th CBSE
IMPORTANT
Science for Tenth Class Part - 3 Biology>Chapter 5 - Our Environment>Short Answer Type Questions>Q 32
Write down a food chain:
(a) In the sea.
(b) Which ends with humans.
(c) With five links in it.
MEDIUM
10th CBSE
IMPORTANT
Science for Tenth Class Part - 3 Biology>Chapter 5 - Our Environment>Short Answer Type Questions>Q 33
At which trophic level a person is feeding when he is eating:
(a) roasted chicken
(b) bread
(c) eggs
(d) apple
(e) fish
EASY
10th CBSE
IMPORTANT
Science for Tenth Class Part - 3 Biology>Chapter 5 - Our Environment>Short Answer Type Questions>Q 34
A student went to study a local pond. In one part of the pond she noticed tadpoles scraping at some pond weed. In another part she saw a water beetle holding a tadpole in its jaws.
(a) Construct a food chain for the pond.
(b) How many links are there in this chain?