Question

After ovulation, in a female mammal, the structure which is formed by the ruptured follicle after ovulation is

• A. Corpus luteum
• B. Graafian follicle
• C. Placenta
• D. Epididymis

Answer 1

The correct option is A

Corpus luteum

The correct option is A

Explanation of the correct option :

1. Ovulation is the event in which the ovum is released from the ovary.
2. The ovulation is regulated by the luteinizing hormone (LH).
3. The ovum develops within follicles (fluid filled sac-like structure) present inside the ovary.
4. The follicles also grow in size and mature along with the developing ovum.
5. The most matured follicle is known as the Graafian follicle which contains the matured ovum which can undergo fertilization.
6. After ovulation, the Graafian follicle transforms into a yellowish mass of cells which can secrete hormones like progesterone.
7. This newly formed structure is known as the corpus luteum.
8. If there is fertilization, then corpus luteum will be maintained otherwise it degenerates after few days of ovulation.

Explanation of the incorrect option:

Option B:

1. The most matured follicle present inside the ovary is known as the Graafian follicle which contains the matured ovum which can undergo fertilization.

Option C:

1. Placenta is a temporary endocrine tissue developed in the uterus once implantation occurs after fertilization.

Option D:

1. Epididymis are coiled tubular structures which remain attached to the top outer part of each testes and acts as the site for sperm maturation.

Final answer: After ovulation, in a female mammal, the structure which is formed by the ruptured follicle after ovulation is corpus luteum.