Organisms and Populations

  • Question 1
    CBSEENBI12001040

    To live in groups is beneficial because :
    • feeling of security
    • can obtain food easily
    • Partner is available for mating
    • All the above

    Solution

    D.

    All the above
    Question 2
    CBSEENBI12001041

    Ants give information to their companions :
    • by dancing
    • by secretion of pheromones
    • by making sound
    • by defecating

    Solution

    B.

    by secretion of pheromones
    Question 3
    CBSEENBI12001042

    Population density is denoted by the symbol
    • N
    • D
    • M
    • D

    Solution

    A.

    N
    Question 4
    CBSEENBI12001043

    The number of births during a given period in the
    population that are added to the initial density is 

     :
    • Natality
    • Mortality
    • Migration
    • Immigration

    Solution

    A.

    Natality

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