Match List I with List II. List I (Follicular stage) List II (Characteristic feature) (A) Primary follicle (I) Characterised by a fluid-filled cavity called antrum (B) Secondary follicle (II) Secondary oocyte forms a new membrane called zona pellucida (C) Tertiary follicle (III) Oocyte surrounded by a single layer of granulosa cells (D) Graafian follicle (IV) Surrounded by more layers of granulosa cells and a new the

Step-by-step solution

According to NCERT: Primary follicle: A primary oocyte gets surrounded by a single layer of granulosa cells. Secondary follicle: The primary follicle gets surrounded by more layers of granulosa cells and a new theca. Tertiary follicle: It is characterised by a fluid-filled cavity called the antrum. Graafian follicle: The mature follicle where the secondary oocyte forms a new membrane called the zona pellucida around it. Therefore, the correct matching is A-III, B-IV, C-I, D-II. Answer: A-III, B-IV, C-I, D-II