Population Test

Population

This is online test 01 for CBSE class 12 Biology Organisms and Populations (Population).. There are 10 questions in this test with each question having around four answer choices.

Questions & Answers

1
Stage of a bacterial growth just after inoculation will be:
  • A
    Log phase
  • B
    Death phase
  • C
    Lag phase
    Correct
  • D
    Stationary phase
2
The statistical study of human population is called:
  • A
    Population human genetics
  • B
    Biostatistics
  • C
    Sociology
  • D
    Demography
    Correct
3
Adipose tissues in whales and dolphins help in:
  • A
    Thermoregulation
    Correct
  • B
    Storing oxygen
  • C
    Withstanding external pressure
  • D
    Echolocation
4
Choose the correct sequence:
  • A
    biome -->species -->population -->community
  • B
    species -->population -->community -->biome
    Correct
  • C
    species -->community -->population -->biome
  • D
    population -->species -->community -->biome
5
Match the following: column I (i) Migrate (ii) Suspend (iii) Regulate (iv) Conform Column II (a) hibernation and aestivation (b) sweat it out (c) inability to maintain a constant internal environment (d) people going from Rajasthan to Kashmir during summer
  • A
    i-d,ii-a,iii-b,iv-c
    Correct
  • B
    i-d,ii-b,iii-c,iv-a
  • C
    i-d,ii-c,iii-a,iv-b
  • D
    i-a,ii-d,iii-b,iv-c
6
Exponential growth pattern in a population results into:
  • A
    J-shaped curve
    Correct
  • B
    none of these
  • C
    Sigmoid curve
  • D
    U-shaped curve
7
In which of the following interaction/s one species is benefitted while other is harmed?
  • A
    competition only
  • B
    predation and parasitism
    Correct
  • C
    parasitism only
  • D
    competition and amensalism
8
Out of the following which is not an example of parasitism?
  • A
    Plasmodium and humans
  • B
    Head louse and humans
  • C
    Tapeworm and humans
  • D
    E.coliand humans
    Correct
9
An age pyramid showing declining population is:
  • A
    Triangular age pyramid
  • B
    S-shaped age pyramid
  • C
    Urn shaped age pyramid
    Correct
  • D
    Bell shaped age pyramid
10
Orchid shows commensalism as interaction with:
  • A
    none of these
  • B
    both mango tree and bee
  • C
    bee
  • D
    mango tree
    Correct