Zooplankton is a heterotrophic plankton that includes anything from small creatures to large animals including jellyfish. Large bodies of water, such as oceans and freshwater systems, are rich in zooplankton. Zooplankton, which are ecologically essential species that are a part of the food chain.

An ecosystem is the sum total of biotic (living) and abiotic (non-living) components interacting with each other. The structural and functional unit of ecology is called an ecosystem. A.G.Tansley first coined the term “Ecosystem”. The biotic factors of the ecosystem are plants, animals, and other organisms and the abiotic factors are sun, water, rocks, minerals, temperature, and humidity. It can be very large or very small. Some examples of ecosystems are aquatic ecosystems, desert ecosystems, forest ecosystem, etc.

A TEXT BOOK OF LIFE SCIENCE AND ENVIRONMENT CLASS 9>Chapter 15 - Ecology and Ecological Organization>EXERCISE>Q 3

EASY

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IMPORTANT

Earn 100

What do you mean by food chain?

Important Questions on Ecology and Ecological Organization

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IMPORTANT

A TEXT BOOK OF LIFE SCIENCE AND ENVIRONMENT CLASS 9>Chapter 15 - Ecology and Ecological Organization>EXERCISE>Q 4

What do you mean by food web?

EASY

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IMPORTANT

A TEXT BOOK OF LIFE SCIENCE AND ENVIRONMENT CLASS 9>Chapter 15 - Ecology and Ecological Organization>EXERCISE>Q 5

What is phytoplankton?

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IMPORTANT

A TEXT BOOK OF LIFE SCIENCE AND ENVIRONMENT CLASS 9>Chapter 15 - Ecology and Ecological Organization>EXERCISE>Q 6

What is zooplankton?

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IMPORTANT

A TEXT BOOK OF LIFE SCIENCE AND ENVIRONMENT CLASS 9>Chapter 15 - Ecology and Ecological Organization>EXERCISE>Q 7

Draw a food chain with respect to energy flow in a commonly formed of the organism named below- (i) Hawk, (ii) Grasshopper, (iii) Grass, (iv) Snake, (v) Toad.

EASY

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IMPORTANT

A TEXT BOOK OF LIFE SCIENCE AND ENVIRONMENT CLASS 9>Chapter 15 - Ecology and Ecological Organization>EXERCISE>Q 8

Define ecosystem.

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IMPORTANT

A TEXT BOOK OF LIFE SCIENCE AND ENVIRONMENT CLASS 9>Chapter 15 - Ecology and Ecological Organization>EXERCISE>Q 11

What is mutualism? Give one example.

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