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Primary productivity depends upon...

Primary productivity depends upon

A

light and temperature

B

water and nutrients

C

photosynthetic capacity of producers

D

all of these

Text Solution

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The correct Answer is:
D
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Knowledge Check

  • Magnitude of primary productivity is affected by

    A
    Temperature, Availability of nutrients
    B
    Solar radiations available, Availability of nutrients
    C
    Photosynthetic capacity of producers
    D
    All of these

  • Gross primary productivity is

    A
    Rate at which organic molecules are formed in autotrophs
    B
    Rate at which organic molecules are used up by autotrophs
    C
    Storage of organic molecules in the body of autotrophs
    D
    Rate at which organic molecules are transferred to next higher trophic level

  • According to David Tilman, greater the diversity, greater is the primary productivity. Which of the following has least diversity but high primary productivity?

    A
    Desert ecosystem
    B
    Tropical rainforest
    C
    Composite fish culture pond
    D
    Cropland ecosystem

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    Xenon Fluorides : Xenon reacts directly with fluorine on heating at 675 K in a sealed nickel tube. The product obtained depends upon the amount of fluorine present. XeF_6 on complete hydrolysis gives

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