Question

The Graafian follicle is characteristic of

• A. Reptiles
• B. Amphibians
• C. Mammals
• D. All of these

Answer 1

The correct option is C Mammals

Graafian follicle (ovarian follicle)is the fluid-filled cavity that surrounds and protects the developing egg cell (oocyte) in the ovary of a mammal. The Graafian follicle is the follicular stage after the first meiotic division but before ovulation. It, therefore, contains a 2N haploid oocyte. It is characterized by a large follicular antrum that makes up most of the follicle. When released from the Graafian follicle and into the oviduct, the ovum will contain three layers: oocyte, zona pellucida and corona radiata.

So the correct option is 'mammals'.