Module 3

Question 1

What is the key component of environmental science?

Answer 1

Ecology

Question 2

What is a community of organisms that interact with each other and non-living components for
sustainable development and adaptation to changing
conditions.

Answer 2

Ecosystem

Question 3

It is called ____ if we combine all the ecosystems present on earth

Answer 3

Biosphere

Question 4

What are the major habitat conditions that the ecosystem is divided into

Answer 4

Terrestrial or land-based ecosystem and aquatic ecosystem

Question 5

Who proposed the term ecosystem?

Answer 5

A.G. Tansley (1935)

Question 6

According to A.G. Tansley, what is an ecosystem defined as?

Answer 6

“Ecosystem is defined as a self-sustained community of plants and animals existing in its own
environment.”

Question 7

Who defined an ecosystem as “any unit that includes all the organisms in a given area interacting with the physical environment, so that a flow of energy gives rise to a clearly defined tropic structure, biotic diversity, and material cycles
within the system”

Answer 7

Odum (1971)

Question 8

Michael Allaby (1983) defined an ecosystem as?

Answer 8

“a community of interdependent
organisms together with the environment”

Question 9

Concept of Ecosystem

Answer 9

the interaction of life with its environment takes place at many levels. A single bacteria in the soil
interacts with water, air around it within a small space while a fish in a river interacts with water and other animals, rivals in a large space.

Question 10

Classification of Ecosystem

Answer 10

Artificial and Natural Ecosystems

Question 11

Non-Living Components

Answer 11

Abiotic

Question 12

Living Components

Answer 12

Biotic

Question 13

Biotic Components

Answer 13

1. Producer
2. Consumers
3. Decomposers or Detritivores