Which one of the following statements is wrong?

  • [AIPMT 2012]
  • A

    When pollen is shed at two­celled stage, double fertilization does not take place.

  • B

    Vegetative cell is larger than generative cell.

  • C

    Pollen grains in some plants remain viable for months.

  • D

    Intine is made up of cellulose and pectin.

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$a\quad \;b\quad\;c\quad\;d$

First three layers of microsporangium which does the function of protection are

How many pollen grains are formed from $10$ microspore mother cells by meiosis

  • [AIPMT 1996]

What is the function of germ pore?

  • [AIPMT 2012]