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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 (c)

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

  • If a round green seeded pea plant (RRYY) is crossed with wrinkled, yellow seeded pea plant,(rrYY) the seeds produced in F, generation are:

    A
    round and yellow
    B
    round and green
    C
    wrinkled and green
    D
    wrinkled and yellow

  • Buccopharyngeal respiration in frog

    A
    is increased when nostrils are closed
    B
    stops when there is pulmonary respiratio
    C
    is increased when it is catching fly
    D
    stops when mouth is opened.

  • The external factors that affect the respiration are:

    A
    temperature, insufficent `O_(2)` and amount of protoplasm
    B
    temperature, insufficient `O_(2)` and high concentration of `CO_(2)`
    C
    temperature, high concentration of `CO_(2)` and respiratory substrate
    D
    temperature, high concentration of `CO_(2)` and amount of protoplasm

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