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First meiotic division of oocyte is comp...

First meiotic division of oocyte is completed in

A

Primary follicle

B

Secondary follicle

C

Tertiary follicle

D

Graafian follicle

Text Solution

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The correct Answer is:
To solve the question "First meiotic division of oocyte is completed in", we need to understand the stages of oocyte development and the associated follicular stages. Here’s a step-by-step breakdown: ### Step 1: Understand Oocyte Development - Oocytes begin as primary oocytes, which are arrested in prophase I of meiosis until they are stimulated to continue development. ### Step 2: Identify Follicular Stages - The development of oocytes occurs within ovarian follicles. The main stages of follicular development are: - Primary Follicle - Secondary Follicle - Tertiary Follicle (also known as Graafian Follicle) ### Step 3: Determine Where the First Meiotic Division Occurs - The first meiotic division of the primary oocyte is completed just before ovulation, specifically when the oocyte is in the tertiary (Graafian) follicle stage. - This division results in the formation of a secondary oocyte and a polar body. ### Step 4: Conclusion - Therefore, the first meiotic division of the oocyte is completed in the **tertiary follicle**. ### Final Answer The correct answer is **C) Tertiary Follicle**. ---
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