Concepts, Pattern And Importance Of Biodiversity Test

Concepts, Pattern And Importance Of Biodiversity

This is online test 01 for CBSE class 12 Biology Biodiversity and Conservation (Concepts, pattern and importance of biodiversity).. There are 10 questions in this test with each question having around four answer choices.

Questions & Answers

1
Speciation maintains biodiversity :
  • A
    only at species level
  • B
    only at individual level
  • C
    only at community level
  • D
    both at species level and community level
    Correct
2
Biodiversity is most frequently quantified as :
  • A
    biomass of species
  • B
    number of species
    Correct
  • C
    stratification of species
  • D
    energy of trophic levels
3
Biological diversity level that doesn’t exist is:
  • A
    alpha
  • B
    gamma
  • C
    delta
    Correct
  • D
    beta
4
When we compare the relationship between species richness and area for wide variety of taxa, the graph appears to be a :
  • A
    cubic parabola
  • B
    rectangular hyperbola
    Correct
  • C
    cubic hyperbola
  • D
    rectangular parabola
5
Which article of the Constitution of India specifies that, "it shall be the duty of every citizen of India to protect and improve the natural environment including forests, lakes, rivers, and wildlife and to have compassion for living creatures."
  • A
    article 48
  • B
    none of these
  • C
    article 52-A
  • D
    article 51-A
    Correct
6
If all the members of a host species die then all its unique parasites also die off, representing:
  • A
    conservation
  • B
    extinction
  • C
    biological control
  • D
    co-extinction
    Correct
7
If a sample area comprises of more number of taxonomically unrelated species, this will indicate:
  • A
    a more diverse sample area
    Correct
  • B
    a less diverse sample area
  • C
    a sample area with number of sub-species
  • D
    a sample area with greater genetic diversity
8
When we will move away from the equator towards poles, we will find:
  • A
    a gradual increase in the species diversity
  • B
    a gradual increase in the ecosystem diversity
  • C
    a gradual decrease in the species diversity
    Correct
  • D
    no change in the species diversity
9
In a wetland the primary factor controlling the environment and the associated plant and animal life will be:
  • A
    water
    Correct
  • B
    light
  • C
    soil
  • D
    temperature
10
If we say, India has about 50,000 type of rice and 1000 types of varieties of mango what level of diversity it indicates:
  • A
    species diversity
  • B
    genetic diversity
    Correct
  • C
    community diversity
  • D
    ecosystem diversity