Punjab 12th Class Biology Chapter 27 Man and his Environment Mcqs Test Online

Total Question
15 Questions
Total Marks
30 Marks
Total Time
15 Minuts
Test Help For ::

12th Biology Class Test
Entry Test Biology MCQs
Biology Admission Test
Competitive Exams
All Punjab Boards Annual Exams



Test Name



Ch.27 # Man and his Environment

Subject



Biology (10th Class)

Test Type



MCQs


Punjab 12th Class Biology Chapter 27 Man and his Environment Mcqs Test Online

Biology Chapter 27 Man and his Environment Mcqs Test Online 12th Class Punjab Boards

 

Question 1 of 15

Biology

1. A population carrying capacity:
1.
2.
3.
4.

Question 1 of 15

Question 2 of 15

2. The main cause of the recent increase in the amount of CO₂ in the Earth’s atmosphere:
1.
2.
3.
4.

Question 2 of 15

Question 3 of 15

3. Which of the following is the graphical representation of ecological data of an ecosystem?
1.
2.
3.
4.

Question 3 of 15

Question 4 of 15

4. Which is one group of organisms that is able to fix atmospheric nitrogen into forms usable by living organisms?
1.
2.
3.
4.

Question 4 of 15

Question 5 of 15

5. Which of the following is also called greenhouse effect?
1.
2.
3.
4.

Question 5 of 15

Question 6 of 15

6. How do nitrogen fixing bacteria contribute to the nitrogen cycle?
1.
2.
3.
4.

Question 6 of 15

Question 7 of 15

7. Producers of an ecosystem are:

1.
2.
3.
4.

Question 7 of 15

Question 8 of 15

8. Nutrient cycle always involve:
1.
2.
3.
4.

Question 8 of 15

Question 9 of 15

9. Total water resources of the world is
1.
2.
3.
4.

Question 9 of 15

Question 10 of 15

10. Of the total water of the world, oceans contain about:
1.
2.
3.
4.

Question 10 of 15

Question 11 of 15

11. Which of this ecosystem has the lowest net primary production per square meter?
1.
2.
3.
4.

Question 11 of 15

Question 12 of 15

12. Why are ecosystems dependent on a continual supply of solar energy?
1.
2.
3.
4.

Question 12 of 15

Question 13 of 15

13. Klater content of glaciers and polar ice caps
1.
2.
3.
4.

Question 13 of 15

Question 14 of 15

14. Which of these levels of ecological study involves both abiotic and biotic components?
1.
2.
3.
4.

Question 14 of 15

Question 15 of 15

15. Ozone layer is found in:
1.
2.
3.
4.

Question 15 of 15


 

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