Punjab 12th Class Biology Chapter 27 Man and his Environment Mcqs Test Online
Questions 15
Total Marks 30
Time 15 Mins
Helpful For:

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

Start your preparation for Punjab 12th Class Biology Chapter 27 Man and his Environment Mcqs Test Online. This online test contains 15 MCQs and you have 15 Minutes to complete it. The total marks for this test are 30. This test is valid for students of All Punjab Boards (Lahore, Gujranwala, Multan, etc.) following the PCTB Syllabus. Read the questions carefully and select the correct option below to see your result.

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

 

Question 1 of 15

Biology

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

Question 1 of 15

Question 2 of 15

2. Which of these levels of ecological study involves both abiotic and biotic components?
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. Producers of an ecosystem are:

1.
2.
3.
4.

Question 4 of 15

Question 5 of 15

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

Question 5 of 15

Question 6 of 15

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

Question 6 of 15

Question 7 of 15

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

Question 7 of 15

Question 8 of 15

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

Question 8 of 15

Question 9 of 15

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

Question 9 of 15

Question 10 of 15

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

Question 10 of 15

Question 11 of 15

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

Question 11 of 15

Question 12 of 15

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

Question 12 of 15

Question 13 of 15

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

Question 13 of 15

Question 14 of 15

14. Why are ecosystems dependent on a continual supply of solar energy?
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


 

Guide for Punjab Board Students

Students of BISE Lahore, Gujranwala, Multan, and other Punjab boards must follow the SLO based pattern.

Top Scoring Tips for Punjab:

  • Textbook Reading: The paper is 100% derived from PCTB books. Do not rely only on keybooks.
  • Objective Paper (20%): Practice these online MCQs repeatedly as they are taken from 5-Year Past Papers.
  • Bubble Sheet: Ensure you know how to fill the OMR sheet correctly.

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