Oogenesis is the process of formation of an ovum or egg from gamete mother cells. The process starts at the embryonic stage with the development of around 2 million oogonia or gamete mother cells. Meiosis in the gamete mother cells results in the formation of a haploid and functional egg or female gamete. The process of oogenesis takes place in the ovary. Primary oocytes are formed after mitosis in oogonia. The primary oocytes are diploid and give rise to secondary oocytes after meiosis I. Ovum is formed when secondary oocytes complete meiosis II. The division in the secondary oocyte completes at the time of fertilisation when the sperm penetrates the secondary oocyte.
1. A/An ________ is released at the time of ovulation.
(a) oogonium
(b) primary oocyte
(c) ovum
(d) secondary oocyte
Answer: (d)
2. Rapid secretion of _____ induces ovulation.
(a) FSH
(b) estrogen
(c) progesterone
(d) LH
Answer: (d)
3. One primary oocyte produces _______ female gamete(s).
(a) 4
(b) 2
(c) 3
(d) 1
Answer: (d)
4. Which of the following hormones stimulates the development of ovarian follicles?
(a) FSH
(b) estrogen
(c) progesterone
(d) LH
Answer: (a)
5. The process of formation of a mature female gamete is called ________.
(a) spermatogenesis
(b) menstruation
(c) ovulation
(d) oogenesis
Answer: (d)
6. The non-cellular membrane of human ovum is called ________.
(a) zona pellucida
(b) zona radiata
(c) membrana granulosa
(d) vitelline membrane
Answer: (a)
7. The division in primary oocytes arrests at _______ stage.
(a) prophase of meiosis I
(b) metaphase of meiosis I
(c) prophase of meiosis II
(d) metaphase of meiosis II
Answer: (a)
8. The division in secondary oocytes arrests at _______ stage.
(a) prophase of meiosis I
(b) metaphase of meiosis I
(c) prophase of meiosis II
(d) metaphase of meiosis II
Answer: (d)
9. Capacitation is the change in ________.
(a) sperm after fertilisation
(b) ovum after fertilisation
(c) ovum before fertilisation
(d) sperm before fertilisation
Answer: (d)
10. Meiosis II in secondary oocytes is not completed until ________.
(a) birth
(b) uterine implantation
(c) fertilisation
(d) puberty
Answer: (c)
These were some MCQs on Oogenesis. Learn MCQs on related topics for NEET, at BYJU’S.
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