Xenogamy or cross-pollination is performed by
$I$. Abiotic agencies
$II$. Biotic agencies
$III$. Insects only
Select the correct option for the given question
$I$ and $III$
$II$ and $III$
Only $III$
$I$ and $II$
In plants, in nature, autogamy is avoided since the seeds produced
Self-incompatibility is a device for
$I$. Ensuring cross-pollination
$II$. Preventing self-pollination
$III$. Ensuring self-fertilisation
$IV$. Genetic control for self-fertilisation
Choose the correct statements from those given above
Assertion : Insects visit flower to gather honey.
Reason : Attraction of flowers prevents the insects from damaging other parts of the plant.
Sperm cells of angiosperms differ from the rest of the plant groups like gymnosperms by
Mention about agents of pollination and explain pollination by wind.