Question

Draw a neat diagram to show germination of pollen on the female reproductive part of the flower. Name and label only the following parts:
(a) The part that receives the pollen grain.
(b) The structure that carries the male germ cell to reach the female germ cell.

Hint:

In pollen germination: Stigma receives pollen; pollen tube carries male gametes through style to ovule. Remember: Stigma $\rightarrow$ Style $\rightarrow$ Ovary (contains ovule with egg cell).

Answer 1

Step 1: Understand the process of pollen germination.
When a pollen grain lands on the stigma (the female reproductive part of a flower), it absorbs moisture and nutrients. It then germinates by producing a pollen tube that grows down through the style to reach the ovary, where fertilization occurs.
Step 2: Identify the parts to be labeled.

• Part (a): "The part that receives the pollen grain" is the Stigma.
• Part (b): "The structure that carries the male germ cell to reach the female germ cell" is the Pollen Tube.

Step 3: Draw the diagram.
Below is a neat labeled diagram showing pollen germination on the female reproductive part of a flower:

Step 4: Description of the diagram.
The diagram shows:

• The stigma (a) at the top, which receives the pollen grain.
• A pollen grain landed on the stigma, germinating and producing a pollen tube (b).
• The pollen tube grows down through the style towards the ovary.
• The pollen tube carries the male germ cells (sperm cells) to reach the female germ cell (egg cell) inside the ovule for fertilization.

Step 5: Final answer with labeling.
\[ \boxed{\text{(a) Stigma, (b) Pollen tube}} \]