Question

Draw a longitudinal section of a flower and label the following parts:
(i) Part that produces pollen grain.
(ii)Part that transfers male gametes to the female gametes.
(iii) Part that is sticky to trap the pollen grain.
(iv) Part that develops into a fruit

Answer 1

Answer refer to the attachment.

Explanation:-

(i) Part that produces pollen grain - STAMEN

• Stamen is a male reproductive part of a flower.
• It consists of two kinds, dividing it on the basis of its structure—anther and filament, where anther produces pollen grains which develops the sperms and filament supports the anther with a pipe like structure.

(ii)Part that transfers male gametes to the female gametes - POLLEN TUBE

• After the pollination process, pollen grain develops a pollen tube.
• A pollen tube is in a slender tubular form grows down the style, followed by male sperm which later fuse with the female ovule.

(iii) Part that is sticky to trap the pollen grain - STIGMA

• It is a sticky surface on which pollen grains land.
• It is a receptive part of the pistil.

(iv) Part that develops into a fruit - OVARY

• It carries female gametes.
• It contains ovules which later becomes the fruit.

Answer 2

Answer:

Ⅰ ) Parts that produces pollen grains.

➠ Stamen

Ⅱ ) Part that transfers male gametes to the female gametes.

➠ Pollen Tube

Ⅲ ) Part that is sticky to trap the pollen grain.

➠ Stigma

Ⅳ ) Part that develops into a fruit.

➠ Ovary

Explanation:

➻ Stamen :

• The male reproductive part of a flower is called Stamen.
• It consists of two parts namely is anther and filaments.

➻ Pollen Tube :

• The protoplasmic tube that is extruded from a germinating pollen grain and grows toward the ovule is called pollen tube.
• The function of the pollen tube is to carry male gametes towards the ovary through stigma and style.

➻ Stigma :

• It is the head of the pistils.
• The stigma receives pollen, which will begin the process of fertilization.
• It's is a receptive tip, which collects pollen grains.

➻ Ovary :

• It is the ductless reproductive gland that holds a lot of ovules.
• Ovary after fertilization turns into fruit.
• Ovary is an organ in the female reproductive system.