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Human reproduction covers the male and female reproductive organs, gamete formation, fertilization, implantation and hormonal regulation. The menstrual cycle includes ovarian and uterine changes controlled by pituitary and ovarian hormones, while sexually transmitted diseases are studied through their causes, transmission, symptoms, prevention and effects on fertility.
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- A. 12th - 14th
- B. 14th - 16th
- C. Last 2 days of menstrual cycle
- D. 8th-10th
Explanation: Based on the explanations provided and the image, the correct answer to the question is B) 14th - 16th.
Correct answer: 14th - 16th- A. At the end of proliferative phase
- B. In the middle of secretory phase
- C. Just before the end of secretory phase
- D. In the beginning of proliferative phase
Explanation: Based on the explanations provided and the image, the correct answer to the question is A) At the end of the proliferative phase.
Correct answer: At the end of proliferative phase- A. FSH, progesterone, estrogen
- B. Estrogen, FSH, progesteron
- C. FSH, estrogen, progesterone
- D. Estrogen, FSH, progesterone
Explanation: The hormonal sequence during the menstrual cycle begins with an increase in FSH levels, followed by the production of estrogen as the…
Correct answer: FSH, estrogen, progesterone- A. Primordial germ cell
- B. Oogonium
- C. Primary oocyte
- D. Secondary oocyte
Explanation: After the first meiotic division of the primary oocyte, it forms a secondary oocyte and a polar body.
Correct answer: Secondary oocyte- A. Menopause
- B. Puberty
- C. Gestation
- D. Menarche
Explanation: Menarche is the term used to describe the first occurrence of menstruation in a female's life.
Correct answer: Menarche- A. Corpora cardiaca
- B. Corpus luteum
- C. Corpora albicans
- D. Graafian follicle
Explanation: During the secretory phase of the menstrual cycle, the ruptured follicle in the ovary transforms into a structure called the corpus…
Correct answer: Corpus luteum- A. Somatic hybridization
- B. Spermatogenesis
- C. Oogenesis
- D. Spermiogenesis
Explanation: Oogenesis is the process of producing ova (eggs) in the ovaries of females.
Correct answer: Oogenesis- A. Formation of first polar body
- B. Formation of second polar body
- C. Meiosis -II
- D. Division of secondary oocyte
Explanation: The correct answer is the formation of the first polar body because this event occurs during the first meiotic division (Meiosis I) of…
Correct answer: Formation of first polar body- A. Fall in level of progesterone
- B. Increase in estrogen level
- C. Increase in FSH level
- D. Decrease in oxytocin level
Explanation: When progesterone secretion is reduced its supporting effect on the endometrium decreases so, it breakdown causing menstruation.
Correct answer: Fall in level of progesterone- A. Presence /absence of a tail
- B. Number of chromosomes
- C. Being hormone producing/non-hormone producing
- D. Primary gamete/secondary gamete in males
Explanation: This is the key difference between primary and secondary spermatocytes.
Correct answer: Number of chromosomes- A. Diploid spermatids
- B. Haploid sperm
- C. Diploid sperm
- D. Haploid spermatid
Explanation: Secondary spermatocytes are haploid cells, smaller than primary spermatocytes, and show coarse chromatin granules and abundant rough…
Correct answer: Haploid spermatid- A. Mitotic division of secondary oocyte
- B. Meiotic division of primary ooeyte
- C. Mitotic division of primary oocyte
- D. Meiotic division of secondary oocyte
Explanation: When a sperm enters the cytoplasm of an ovum, it triggers the completion of the second meiotic division in the ovum, which was previously…
Correct answer: Meiotic division of secondary oocyte- A. Corpus luteum
- B. Follicle atresia
- C. Primary follicles
- D. Oogonium
Explanation: The corpus luteum is a temporary endocrine gland that develops from a ruptured follicle after ovulation.
Correct answer: Corpus luteum- A. Follicular stage --> luteal stage -> ovulation ---> menstrual
- B. Follicular --> ovulation --> menstrual --> luteal
- C. Follicular --> ovulation --> luteal --> menstruation
- D. Menstrual --> luteal --> ovulation --> follicular
Explanation: Menstrual phase: This is the first phase of the menstrual cycle, and it begins when the lining of the uterus sheds.
Correct answer: Follicular --> ovulation --> luteal --> menstruation- A. Myometrium
- B. Perimetrium
- C. Endometrium
- D. Epimetrium
Explanation: The inner lining of the uterus is called the endometrium. So, option C is correct.
Correct answer: Endometrium- A. Ovopause
- B. Menarche
- C. Menopause
- D. Menstruation
Explanation: Menopause is the stage in a woman's life when her menstrual cycle stops permanently. It usually occurs between the ages of 45 and 55.
Correct answer: Menopause- A. 4
- B. 8
- C. 16
- D. 32
Explanation: Each secondary spermatocyte produces 2 spermatids, so 4 secondary spermatocytes will produce 4 x 2 = 8 spermatids. So option B is correct.
Correct answer: 8- A. Fallopian tube
- B. Uterine tube
- C. Proximal part of oviduct
- D. Proximal part of oviduct, uterine tube & fallopian tube
Explanation: The fallopian tube, also known as the uterine tube or oviduct, is the structure that receives the ovulated oocyte and is the site where…
Correct answer: Proximal part of oviduct, uterine tube & fallopian tube- A. Gonorrhea
- B. Syphilis
- C. Genital herpes
- D. Genital herpes, AIDS
Explanation: Obligate intracellular parasites are organisms that can only survive inside the cells of other organisms.
Correct answer: Genital herpes, AIDS- A. Interstitial cells
- B. Germ cells
- C. Sertoli cells
- D. Spermatocyte
Explanation: Interstitial cells, also known as Leydig cells, are located in the spaces between the seminiferous tubules in the testes.
Correct answer: Interstitial cells