What do you mean by sere?

1. Series of communities in an area

2. The entire sequence of communities that successively change in a given area

3. The entire sequence of communities.

4. The entire sequence of communities that do not change in a given area.

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