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Seeds respire in...

Seeds respire in

A

presence of `O_(2)`

B

presence of `CO_(2)`

C

absence of `O_(2)`

D

both (a) and (b)

Text Solution

Verified by Experts

The correct Answer is:
D
Oxygen is required by the germinating seed during aerobic respiration, it is the main source of energy for the seedlings until the formation of leaves. Oxygen is an atmospheric gas that is found in soil pore spaces. If a seed is buried too deeply within the soil or the soil is water logged, the seed can be oxygen starved. If germinating seeds do not get air for respiration, they are still capable of respiration in absence of oxygen. Anaerobic respiration takes place in the seeds in the absence of free oxygen.
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Knowledge Check

  • Which of these statements about seed dormancy are TRUE? 1: Seeds do not respire during dormancy. 2: Seeds lose a lot of water before dormancy. 3: Seeds have low metabolic rate during dormancy. 4: Seeds have no metabolic activity during dormancy.

    A
    only 1 and 3
    B
    only 2 and 3
    C
    only 1 and 4
    D
    only 1, 2 and 3

  • Germinating seeds help study the rate of respiration as they

    A
    photosynthesize rapidly
    B
    absorb `CO_2`
    C
    respire actively
    D
    release `O_2`

  • Why is some KOH placed in a small test tube in the flask with germinating seeds in the experiment to demonstrate occurrence of respiration in germinating seeds?

    A
    To provide oxygen required by the seeds for respiration.
    B
    To absorb carbon dioxide and create partial vacuum in the flask.
    C
    To absorb water from the seeds to make them dry.
    D
    To make the air present in the flask alkaline.

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