Punjab 12th Class Biology Chapter 26 Some major Ecosystems MCQs Test Online
Questions 10
Total Marks 20
Time 10 Mins

Punjab 12th Class Biology Chapter 26 Some major Ecosystems MCQs Test Online

Punjab 12th Class Biology Chapter 26 Some major Ecosystems MCQs Test Online

 

Question 1 of 10

Biology

1. Fresh water ecosystem covers less than:
1.
2.
3.
4.

Question 1 of 10

Question 2 of 10

2. Only 30% of Earth is:
1.
2.
3.
4.

Question 2 of 10

Question 3 of 10

3. Phytoplanktons are drifting:
1.
2.
3.
4.

Question 3 of 10

Question 4 of 10

4. Phytoplanktons are
1.
2.
3.
4.

Question 4 of 10

Question 5 of 10

5. Nutrients tend to be concentrated near the bottom sediments
1.
2.
3.
4.

Question 5 of 10

Question 6 of 10

6. Drifting or floating microscopic animals and plants are called:
1.
2.
3.
4.

Question 6 of 10

Question 7 of 10

7. A little light is left to power photosynthesis at the depth of:
1.
2.
3.
4.

Question 7 of 10

Question 8 of 10

8. The light in this zone is insufficient to support photosynthesis.
1.
2.
3.
4.

Question 8 of 10

Question 9 of 10

9. Limnetic phytoplanktons include the / Producers of limnetic zone are
1.
2.
3.
4.

Question 9 of 10

Question 10 of 10

10. The aquatic ecosystem, near shore zone is called:
The zone, rich in life, in a freshwater lake is called:
1.
2.
3.
4.

Question 10 of 10


 

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