The individual transitional communities in a sere are termed as-

1. Seral stages

2. Seral communities

3. Seral species

4. Both 1 and 2.

When did ecological succession start on earth?

1. after the rise of mammals

2. since life started

3. after the rise of plants

4. can’t say

Which of the following does not happen during successive seral stages?

1. Change in the diversity of species of organisms

2. Increase in the number of species and organisms

3. A decrease in the total biomass.

4. Change in the properties of soil

Where does succession starts?

1. In an area inhabiting small plants

2. In an area with no living organisms.

3. In an area with fertile soil only

4. In an area with blue green algae

If succession starts on bare rocks, it is known as-

1. Early succession

2. Primary succession

3. Secondary succession

4. None of the above

A forest was completely wiped out by the fire, after a long time grasses appeared and then large trees, this type of succession is known as-

1. Early succession

2. Primary succession

3. Secondary succession

4. Reforestation

Which type of succession could occur at newly cooled lava, bare rock, newly created pond or reservoir?

1. Early succession

2. Primary succession

3. Secondary succession

4. None of the above

Why does secondary succession is faster than primary succession?

1. It has fast growing plants

2. Soil formation is faster

3. Some soil or sediment is already present

4. It does not require water.

Which organisms are affected by the ecological succession?

1. Plants

2. animals

3. Birds

4. All of the above

At any time during succession, natural or human induced disturbances (fire, deforestation, etc.), can:
1. convert a particular seral stage of succession to an earlier stage.
2. create new conditions that encourage some species and discourage or eliminate other species.
3. have no effect on the continuous process of succession.
4. more than one of the above given options are correct.