Endosperm is formed only when it is needed.

Define perianth.</h2></div>

Cross pollination does not occur in<br> </h2></div>

Lever mechanism of pollination is observed in<br> </h2></div>

Out of the following factors, cross-pollination does not take place due to </h2></div>

What is polyembryony and how can it be commercially exploited?</h2></div>

What is apomixis and what is its importance?<br> </h2></div>

Xenia is an effect of pollen grains on ......................</h2></div>