Explain the process of artifical hybridisation to get improved crop variety in (i) plants bearing bisexual flowers (ii) female parent producing unisexual flowers.

Name two plants which bear unisexual flowers?

Give two examples of plants which bear bisexual flowers

Explain the process of Double fertilization in flowering plants. Draw diagram also.

A mendelian experinment consisted of breeding tall pea plants bearing violet flower with short pea plants bearing white flowers. The progeny all bore violet flowers, but almost half of them were short this suggests that the genetic make-up of the tall parent can be depicted as:

Examine a few flowers of any cucurbit plant and try to identify the staminate and pistillate flowers. Do you know any other plant that bears unisexual flowers?

In peas, tallness is dominant over dwarfness and red colour of flowers is dominant over the white colour. When a tall platn bearing red flowers was pollinated with dwarf plant bearing white flowers, the different phenotypic groups were obtained in the progeny in number (a)Tall, red - 138 (b)Tall, white - 132 (c)Dwarf, red - 136 and (d)Dwarf, white - 128. Mention the genotypes of the two parents and of the four offspring types.

The probability of fruit set in a self pollinated bisexual flower of a plant is far greater than a dioceous plant. Explain.