Self Studies

Organisms and P...

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  • Question 1
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    According to the law of population growth, if an initial population of yeast cells is 10 in number, was allowed to grow for 6 hours, the expected number of individuals in the final population will be about 

  • Question 2
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    Elephants, man and mountain sheep;

  • Question 3
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    Which of the following statements regarding species interdependence are true?
    A.
    A relationship between two species of organism where both the partners are benefitted from each other is called mutualism.
    B. An interspecific association where both partners derive benefit from each other is called commensalism.
    C. A direct food relation between two species of animals in which one animal kills and feeds on another is referred as predation.
    D. 
    An association of two species where one is benefitted and other remains unaffected is called symbiosis.

  • Question 4
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    The population density can be calculated by

  • Question 5
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    Match list I with list II and choose the correct options.

    List IList II
    (a) Pacific salmon fish1. Verhulst-Pearl logistic growth
    (b) $$N_t = N_0 e^{et}$$2. Breeds only once in lifetime
    (c) Oyster3. Exponential growth
    (d) $$ \displaystyle dN/dt = rN \left( \frac{K - N}{K} \right)$$4. A large number of small sized offspring

  • Question 6
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    Without our present day atmosphere the average surface temperature of the earth would be

  • Question 7
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    Two different species can not live for long duration in the same niche or habitat. This law is 

  • Question 8
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    Match the following and choose the correct combination from the options given.

    Population InteractionExamples
    (a) Mutualism                    (1) Ticks on dogs
    (b) Commensalism(2) Balanus and Chanthamalus
    (c) Parasitism(3) Sparrow and any seed
    (d) Competiton(4) Epiphyte on a mango branch
    (e) Predation(5) Orchid, Ophrys, and bee

  • Question 9
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    After exponential increase, population growth declines and stagnates. The growth curve is

  • Question 10
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    Hyperparasite is one

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