Flower

Read the statement and answer the questions that follow.

A flower of brinjal has 520 ovules in its ovary. However, it produces a fruit with only 480 viable seeds.

(a) What could have prevented the rest of the 40 ovules from maturing into viable seeds? Explain giving a reason.

(b) Describe the development of a dicot embryo in a viable seed.

(c) Why certain angiospermic seed albuminous while others are exalbuminous? Explain.

In a flowering plant a microspore mother cell produces four male gametophytes, while a megaspore mother cell forms only one female gametophyte. Explain.

Sketch and label stages in the development of the angiospermic female gametophyte from the functional megaspore.

List the three stages the annuals and biennial angiosperms have to pass through during their life cycle.

Give an example of an angiosperm seed that has a perisperm. Name the part the perisperm develops from.

Give a reason for the Following:

Pollen grains of wind-pollinated flowers are produced in large quantities.

Define Racemose inflorescence

A capsicum flower has 240 ovules in its ovary. But, it produces a fruit with only 180 viable seeds.