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MCQ 13.Organisms and Populations / अध्याय : जीव और समष्टियाँ

MCQ Test

  • Q:1

    The narrow range of temperature restricts the survival of

  • A
    Parathermal organisms
  • B
    Hypothermal organisms
  • C
    Eurythermal organisms
  • D
    Stenothermal organisms
  • Q:2

    If N is the population density at a time t; the population density at time (t + 1) can be expressed as

  • A
    N t = N t+1 + [(B + I) - (D + E)]
  • B
    N t+1 = Nt + [(B + E) - (D - I)]
  • C
    Nt+1 = N t+ [(B + I) - (D + E)]
  • D
    N t+1 = N t + [(B + I) + (D - E)]
  • Q:3

    The number of death in a population in a given time is called

  • A
    natality
  • B
    mortality
  • C
    immigration
  • D
    emigration
  • Q:4

    Which one of the following aids in the increment of reproductive fitness?

  • A
    Evolution
  • B
    Potential mortality
  • C
    Age distribution
  • D
    None of these
  • Q:5

    Lichen is an example of

  • A
    Parasitism
  • B
    Mutualism
  • C
    Commensalisms
  • D
    Interspecific interaction
  • Q:6

    Which one of the following type of competition occurs between individuals of same species in a population?

  • A
    Inter-specific
  • B
    Intra-specific
  • C
    Local
  • D
    None of these
  • Q:7

    If natality is low, population density is

  • A
    low
  • B
    high
  • C
    variation
  • D
    constant
  • Q:8

    The mathematical expression for logistic growth is

  • A
    dt/dN = rN (K-N/K)
  • B
    dN/dt = rN (K-N)
  • C
    dN/dt = rN (K-N/K)
  • D
    dN/dt = r (K-N/K)
  • Q:9

    At which temperature, the proteins in thermophiles are stable?

  • A
    80°C
  • B
    85°C
  • C
    100°C
  • D
    120°C
  • Q:10

    Any structural or behavioral change in an organism that makes it best suited to survive and reproduce in its environment is termed as ?

  • A
    hibernation
  • B
    aestivation
  • C
    adaptation
  • D
    conformation