Which one of the following statements is wrong ?

  • Option 1)

    Vegetative cell is larger than generative cell.

  • Option 2)

    Pollen grains in some plants remain visible for months.

  • Option 3)

    Intine is made up of cellulose and pectin.

  • Option 4)

    When pollen is shed at two-celled stag, double fertilization does not take place.

 

Answers (1)

As discussed in

Double Fertilisation -

After entering one of the synergids, the  pollen tube releases the two male gametes into the cytoplasm of the synergid. One of the male gametes moves towards the egg cell and fuses with its nucleus thus completing the syngamy. This results in the formation of a diploid cell, the zygote.

-

 

Double fertilisation takes place when pollen grain releases two male gametes into synergid.

 


Option 1)

Vegetative cell is larger than generative cell.

This option is incorrect.

Option 2)

Pollen grains in some plants remain visible for months.

This option is incorrect.

Option 3)

Intine is made up of cellulose and pectin.

This option is incorrect.

Option 4)

When pollen is shed at two-celled stag, double fertilization does not take place.

This option is correct.

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