Question

Describe the structure of a typical ovule with a diagram.

Hint:

The micropyle is an essential part of the ovule as it allows the pollen tube to reach the egg during fertilization.

Answer 1

Step 1: Structure of Ovule.
An ovule is the female gametophyte found in the ovary of seed plants. The main parts of the ovule include: 1. Integuments: Two layers that surround and protect the ovule, except for a small opening called the micropyle. 2. Nucellus: The central tissue, which contains the female gamete (egg cell). 3. Embryo Sac: The female gametophyte, where fertilization occurs. It contains the egg cell, two polar nuclei, and other supporting cells. 4. Micropyle: The opening through which pollen tube enters during fertilization.
Step 2: Diagram of Ovule.

Step 3: Conclusion.
The ovule's structure is vital for protecting the egg and facilitating fertilization in flowering plants.
Final Answer: \[ \boxed{\text{A typical ovule consists of integuments, nucellus, embryo sac, and micropyle.}} \]