The types of pollination exhibited by Vallisneria and Zea mays respectively are ………

The union of male gamete with the female gamete is called ………

The secondary nucleus is formed by the fusion of …………

A group of three cells situated at the base of the embryo sac are called ………

The female gametophyte in angiosperms is a ……………… nucleated structure.

In artificial hybridization, pollen grains are pollinated by ………

Which of the following does not occur in the embryo sac of angiosperms?

To produce 500 pollen grains, how many microspore mother cells are required ?

How many meiotic divisions are required for the formation of 100 seeds ?

During fertilization, male gametes are carried by pollen tube. This is called …………