Question

Which of the following cells is haploid?

• A. Oogonia
• B. Primary oocyte
• C. Secondary oocyte
• D. Zygote

Hint:

Secondary oocyte is haploid (n), ready for fertilization.

Answer 1

The Correct Option is C

Step 1: Chromosome number.
Oogonia and primary oocytes are diploid (2n). Secondary oocyte, formed after meiosis I, is haploid (n). Zygote is diploid again.
Step 2: Option analysis.
(1) Oogonia – Diploid.
(2) Primary oocyte – Diploid.
(3) Secondary oocyte – Haploid, correct.
(4) Zygote – Diploid.
Step 3: Conclusion.
Correct answer is (3) Secondary oocyte.