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:
  • A
    Reaction
    Correct
  • B
    Aggregation
  • C
    Ecesis
  • D
    Invasion
2
Principle of ecological succession is of practical importance in :
  • A
    Reforestation
    Correct
  • B
    Deforestation
  • C
    Urbanisation
  • D
    Competition
3
The characteristic vegetation of arctic desert is/are:
  • A
    Lichens and mosses
    Correct
  • B
    Conifers
  • C
    Acacia
  • D
    Marshy plants
4
In a temperate forest, the dominant plant species are of:
  • A
    Shorea
  • B
    Pinus
    Correct
  • C
    Funaria
  • D
    Tectona
5
To attain maximum diversity and niche specialization, biotic succession needs:
  • A
    Pioneer community
  • B
    Interspecific competition
  • C
    Transitional community
  • D
    Climax community
    Correct
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.
  • A
    Herbs
  • B
    Mosses
  • C
    Shrubs
  • D
    Lichens
    Correct
7
The ecological niche of an organism will not represent:
  • A
    resources it cannot utilize
    Correct
  • B
    range of conditions that it can tolerate
  • C
    its functional role in the ecological system
  • D
    its specialization
8
Which of the following human activities wouldn’t set ecological succession back?
  • A
    Option A
    Correct
  • B
    Option B
  • C
    Option C
  • D
    Option D
9
Ecological succession is gradual and fairly predictable change in the
  • A
    Species adaptation in given area.
  • B
    Species population of given area.
  • C
    Species composition of a given area.
    Correct
  • D
    Species colour in given area.
10
The individual transitional communities are termed seral stages or
  • A
    Seral species
  • B
    Climax organisms
  • C
    Seral organisms
  • D
    Seral communities
    Correct