Question

After ovulation the ovum is surrounded by a group of cells called?

• A. Corona radiata
• B. Zona pellucida
• C. Granulosa cells
• D. Theca layer

Hint:

Ovum post-ovulation is covered by corona radiata cells.

Answer 1

The Correct Option is A

Step 1: Structure of ovum.
After ovulation, the ovum is surrounded by corona radiata, which nourishes and protects it.
Step 2: Analysis of options.
(1) Corona radiata – Correct.
(2) Zona pellucida – Glycoprotein layer below corona radiata.
(3) Granulosa cells – Present in follicle, not around ovum post-ovulation.
(4) Theca layer – Surrounds follicle, not ovum.
Step 3: Conclusion.
Correct answer is (1) Corona radiata.