ecology

2. As an ecosystem, wetlands arc useful for which of the following ?

For nutrient recovery and cycling
For releasing heavy metals through absorption by plants
In reducing siltiation of rivers by retaining sediments
All the above

Join Our Telegram Channel
Subscribe on YouTube
title="As an ecosystem, wetlands arc useful for which of the following ?" class="read-more button" href="https://exam.pscnotes.com/mcq/as-an-ecosystem-wetlands-arc-useful-for-which-of-the-following/#more-3480">Detailed SolutionAs an ecosystem, wetlands arc useful for which of the following ?

4. 143.If rainforests and tropical forests are the lungs of the Earth, then surely wetlands function as its kidneys Which one of the following functions of wetlands best reflects the abore statement ?

The water cycle in wetlands involves surface runoff, subsoil percolation and evaporation.
Wetlands play a vital role in maintaining sedimentation balance and soil stabilieation.
Aquatic plants absorb heavy metals and excess nutrients,

Join Our Telegram Channel

as its kidneys Which one of the following functions of wetlands best reflects the abore statement ?" class="read-more button" href="https://exam.pscnotes.com/mcq/143-if-rainforests-and-tropical-forests-are-the-lungs-of-the-earth-then-surely-wetlands-function-as-its-kidneys-which-one-of-the-following-functions-of-wetlands-best-reflects-the-abore-statement/#more-2758">Detailed Solution143.If rainforests and tropical forests are the lungs of the Earth, then surely wetlands function as its kidneys Which one of the following functions of wetlands best reflects the abore statement ?

5. Which of the following is a correct statement?

Energy flow in the biospheric ecosystem is unidirectional.
Energy flow in the biospheric ecosystem is cyclic.
Species at progressively higher tropic levels appear to be less efficient, in using available energy.

Detailed SolutionWhich of the following is a correct statement?

6. Which of the following is not correct about ecosystem?

It comprises both, abiotic and biotic components.
It has its own productivity.
It is a closed system.

Detailed SolutionWhich of the following is not correct about ecosystem?

7. Which of the following is not true about the eco-system?

It represents all living organisms and physical environment in any given space-time unit.
It is a functional unit.
It has own productivity.
It is a closed-system. .

Join Our Telegram Channel
Subscribe on YouTube
of the following is not true about the eco-system?" class="read-more button" href="https://exam.pscnotes.com/mcq/which-of-the-following-is-not-true-about-the-eco-system/#more-1688">Detailed SolutionWhich of the following is not true about the eco-system?

8. The concept of ecosystem is attributed to:

A.H. Strahler
A.G. Tansley
C.C. Park
F.R. Fosberg

Join Our Telegram Channel
Subscribe on YouTube
button" href="https://exam.pscnotes.com/mcq/the-concept-of-ecosystem-is-attributed-to/#more-1647">Detailed SolutionThe concept of ecosystem is attributed to:

9. Which of the following has the lowest mean net primary productivity?

Temperate forests
Tropical forests
Temperate grasslands
Tropical savanna

Detailed Solution

Join Our Telegram Channel
Subscribe on YouTube
class="screen-reader-text">Which of the following has the lowest mean net primary productivity?

10. In a grassland eco-system termites occupy the trophic level of _____.

Producers
Primary consumers
Secondary consumers
Tertiary consumers

Detailed SolutionIn

Join Our Telegram Channel
Subscribe on YouTube
a grassland eco-system termites occupy the trophic level of _____.

Page 1Page 2Page 3Page 4Page 5
Test 1