- AOne of the megaspores out of the four megaspores which are derived from division of megaspore mother cell.
- BThree megaspores.
- COnly from two functional megaspores.
- DNone of these.
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$I$. There are many side effects of tubectomy and vasectomy
$II$. Purpose of tubectomy is to prevent egg formation
$III$. The most important component of the oral contraceptive pill is progesterone
$IV$. Contraceptive oral pills help in birth control by preventing ovulation
$A$. The flowers of Vallisneria are colourful and produce nectar.
$B$. The flowers of water lily are not pollinated by water.
$C$. In most of water-pollinated species, the pollen grains are protected from wetting.
$D$. Pollen grains of some hydrophytes are long and ribbon like.
$E$. In some hydrophytes, the pollen grains are carried passively inside water.
Choose the correct answer from the options given below.