Question 12 Marks
How depletion of ozone layer affects living organisms ?
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Question 22 Marks
Suggest measures to conserve the forests.
Question 32 Marks
Which greenhouse gas is mainly responsible for global warming?
Question 42 Marks
(a) What is ex-situ conservation?
(b) Mention any two places where ex-situ conservation is undertaken.
(b) Mention any two places where ex-situ conservation is undertaken.
Question 52 Marks
Complete the following chart and rewrite :
| Sr. No. | Type | Examples |
| 1 | Vulnerable species | Clouded leopard, Musk deer |
| 2 | Great Indian Bustard, Hawiian monk seal | |
| 3 | Three banded armodillo (Brazil), Short eared rabbit (Summatra) |
Question 62 Marks
Complete the tree diagram and examples of (A) and (B):
Question 72 Marks
Give any 'two' examples of endangered species.
Question 82 Marks
There is no hole in the ozone layer', What do you understand by this?
Question 92 Marks
Define the term 'natality'. How natality is calculated?
Question 102 Marks
Enlist the causes of deforestation.
Question 112 Marks
Give the hazardous effects of agrochemicals.