Ecological Hierarchy

Q.

Plant community is formed by

Q. Match the following:

A. Population	I. Part of the earth consisting of all the ecosystems of the world
B. Community	II. Assemblage of all the individuals belonging to different species occurring in an area
C. Ecosystem	III. Group of similar individuals belonging to the same species, found in an area
D. Ecosphere	IV. Interaction between the living organisms and their physical environmental components
	V. Classification of organisms based on the type of environment

1. A B C D
   I IV V III
2. A B C D
   V II III I
3. A B C D
   III II IV I
4. A B C D
   II III V IV

Q. Assertion: A biotic community has a higher position than population in ecological hierarchy
Reason: Population of similar individuals remains isolated in the community.

1. Both assertion and reason are true and the reason is the correct explanation of assertion
2. Both assertion and reason are true but reason is not the correct explanation of assertion
3. Assertion is true but reason is false
4. Assertion is false and reason is true

Q. Biotic factors are

1. Chemical factors of soil which affect life
2. Physical factors of soil which affect life
3. All living organisms which influence other living organisms
4. Factors of atmosphere which affect life

Q.

Define the term biosphere.

Q. Biotic factors are

1. Chemical factors of soil which affect life
2. Physical factors of soil which affect life
3. All living organisms which influence other living organisms
4. Factors of atmosphere which affect life

Q.

The number of individual organisms of a particular species form a

1. population

2. community

3. ecosystem

4. biosphere

Q.

A population is a group of

1. individuals in a species

2. individuals in a species in a given area

3. communities in an ecosystem

4. individuals in a family