KVV E-Modules - Ecosystem

Quadrant -I (Video)

Ecosystem

The ecosystem approach is a strategy for the integrated management of land, water and living resources that equitably promotes conservation and sustainable use. The application of the ecosystem approach will …

Quadrant - II (Study Material)

1. Ecosystem

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Quadrant - III (Assignments)

1. Ecosystem

An ecosystem can be visualised as a functional unit of nature, where living organisms interact among themselves and also with the surrounding physical environment. Ecosystem varies greatly in size from a small pond to a large forest or a sea. Many ecologists regard the entire biosphere as a global ecosystem, as a composite of all local ecosystems on Earth. Since this system is too much big and complex to be studied at one time, it is convenient to divide it into two basic categories, namely terrestrial and aquatic. Forest, grassland and desert are some examples of terrestrial ecosystems; pond, lake, wetland, river and estuary are some examples of aquatic ecosystems. Crop fields and an aquarium may also be considered as man-made ecosystems.

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Quadrant - IV (MCQs)

1. Who coined the term ecosystem?

A: A) Darwin B: B) A. G. Tansley C: C) Aristotle D: D) Newton

2. Ecosystem is the unit of:

A: A) Biology B: B) Chemistry C: C) Ecology D: D) Physics

3. Which of the following is an abiotic component?

A: A) Plants B: B) Animals C: C) Water D: D) Bacteria

5. Herbivores belong to which trophic level?

A: A) First B: B) Second C: C) Third D: D) Fourth

6. Organisms that break down dead matter are called:

A: A) Producers B: B) Consumers C: C) Decomposers D: D) Predators

7. Which ecosystem has low rainfall?

A: A) Forest B: B) Grassland C: C) Desert D: D) Aquatic

8. The marine ecosystem includes:

A: A) Rivers B: B) Lakes C: C) Oceans D: D) Ponds

9. The flow of energy in an ecosystem is through:

A: A) Water cycle B: B) Food chain C: C) Nitrogen cycle D: D) Oxygen cycle

10. Standing crop refers to:

A: A) Dead organisms B: B) Living material in an ecosystem C: C) Only plants D: D) Only animals

4. Producers are also known as:

A: A) Consumers B: B) Decomposers C: C) Autotrophs D: D) Herbivores

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