If mammalian ovum fails to get fertilized, which one of the following is unlikely ?
- Corpus luteum will disintegrate
- Estrogen secretion further decreases
- Primary follicle starts developing
- Progesterone secretion rapidly declines
The Correct Option is C
Solution and Explanation
The primary follicles are the initial stage of follicle development in the ovary. If fertilization does not occur, the primary follicles would not typically start developing immediately. Instead, the cycle would likely follow the natural progression, with the corpus luteum disintegrating, estrogen secretion decreasing, and progesterone secretion rapidly declining. If fertilization does not occur, the ovarian cycle typically proceeds towards the preparation of a new follicle for ovulation in the subsequent menstrual cycle.
So, the correct option is (C): Primary follicle starts developing
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Concepts Used:
Fertilisation
Fertilization happens when a sperm fuses with the female act during sexual intercourse and further forms an egg that gets implanted in the uterus of the female. The sperm goes through the fallopian tube and penetrates the zona pellucida layer of the ovum (female egg) and then fuses with it which forms a zygote (fertilized egg). Thousand of sperms are generated in a male body to compensate for the ones unfit and non-motile ones. Once the zygote is created or formed, it gets implanted in the uterus and further growth starts taking place when cells start dividing and forming tissues, and tissues further form organs which result in the formation of an organ system, eventually or in time turning into an organism.