Question

Which part of an egg contains the blastodisk?

• A. Egg white (Albumen)
• B. Egg shell
• C. Egg yolk
• D. Chalaza

Hint:

Blastodisk → Present on yolk → Site of embryo development.

Answer 1

The Correct Option is C

Concept: An egg consists of several structural components, each with specific biological functions. The blastodisk plays a crucial role in embryonic development.
Step 1: Understanding blastodisk.
The blastodisk is a small, circular, whitish spot present on the surface of the yolk. It is the site where fertilization occurs and from which the embryo develops.
Step 2: Location of blastodisk.
It is located on the egg yolk, not in the albumen or shell.
Step 3: Functions of other parts.

• Albumen: Provides water and protein to the embryo
• Egg shell: Protective outer covering
• Chalaza: Holds the yolk in position

Step 4: Conclusion.
Thus, the blastodisk is present in the egg yolk.