Ecological Succession Test
Ecological Succession
This is online test 02 for CBSE class 12 Biology Ecosystem (Ecological succession).. There are 10 questions in this test with each question having around four answer choices.
Questions & Answers
1
During process of succession a step that renders, environment of an area unsuitable for existing species is:
- AReactionCorrect
- BAggregation
- CEcesis
- DInvasion
2
Principle of ecological succession is of practical importance in :
- AReforestationCorrect
- BDeforestation
- CUrbanisation
- DCompetition
3
The characteristic vegetation of arctic desert is/are:
- ALichens and mossesCorrect
- BConifers
- CAcacia
- DMarshy plants
4
In a temperate forest, the dominant plant species are of:
- AShorea
- BPinusCorrect
- CFunaria
- DTectona
5
To attain maximum diversity and niche specialization, biotic succession needs:
- APioneer community
- BInterspecific competition
- CTransitional community
- DClimax communityCorrect
6
To observe beginning of ecological succession on an igneous rock, we must search over there : Lichens Mosses Shrubs Herbs E Ecological succession on an igneous rock starts from lichens that release some enzymes that decompose the rocks slowly. So, to observe beginning of ecological succession on igneous rock we must search over for Lichens.
- AHerbs
- BMosses
- CShrubs
- DLichensCorrect
7
The ecological niche of an organism will not represent:
- Aresources it cannot utilizeCorrect
- Brange of conditions that it can tolerate
- Cits functional role in the ecological system
- Dits specialization
8
Which of the following human activities wouldn’t set ecological succession back?
- ACorrect

- B

- C

- D

9
Ecological succession is gradual and fairly predictable change in the
- ASpecies adaptation in given area.
- BSpecies population of given area.
- CSpecies composition of a given area.Correct
- DSpecies colour in given area.
10
The individual transitional communities are termed seral stages or
- ASeral species
- BClimax organisms
- CSeral organisms
- DSeral communitiesCorrect