Which of the following statements is $NOT$ correct?

  • A
    The exine of pollen grains is made up of sporopollenin.
  • B
    Pollen grains of many species cause severe allergies.
  • C
    Pollen grains stored in liquid nitrogen can be used in crop breeding programs.
  • D
    The tapetum helps in the dehiscence of the anther.

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Similar Questions

What is most commonly observed in plants bearing bisexual flowers?

Match List-$I$ with List-$II$:
List-$I$ (Types of Stamens)List-$II$ (Example)
$A$. Monoadelphous$I$. Citrus
$B$. Diadelphous$II$. Pea
$C$. Polyadelphous$III$. Lily
$D$. Epiphyllous$IV$. China-rose

Choose the correct answer from the options given below:

Synergids are helpful in . . . . . . .

$A$: Restitutional nucleus can be observed in endothecium cells.
$R$: Endothecium cells are usually triploid.

In the figure given below,the plant bears two different types of flowers marked '$A$' and '$B$'. Identify the types of flowers and state the type of pollination that will occur in them.

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