CBSE Class 12 Biology Human Reproduction MCQs Set D

Question. Follicle stimulating hormone acts on
(a) Leydig cells
(b) Sertoli cells
(c) Spermatogonia
(d) None of the options

Answer: B

Question. The sperm structure doesn’t consist of
(a) Head
(b) Neck
(c) Polar body
(d) Middle piece

Answer: C

Question. Sperm nucleus is present in which region
(a) Head
(b) Neck
(c) Middle piece
(d) Tail

Answer: A

Question. Spermatogenesis starts at the age of
(a) 1–5 years
(b) 12–18 years
(c) 30–35 years
(d) 40–50 years

Answer: B

Question. Which of the following hormone is a gonadotropin?
(a) Luteinising hormone and thyroid hormone
(b) Luteinising and adrenaline hormone
(c) Luteinising and follicle stimulating hormone
(d) Thyroid and adrenaline hormone

Answer: C

Question. In male reproductive system luteinising hormone acts on which cell and stimulates the secretion of
(a) Sertoli cells, androgens
(b) Leydig cells, progesterone
(c) Sertoli cells, androgens
(d) Leydig cells, androgens

Answer: D

Question. Acrosome contains
(a) Fat
(b) Enzymes helpful in fertilisation
(c) Basophils
(d) Lipid

Answer: B

Question. The role of mitochondria in sperm is to
(a) Provide energy for sperm motility
(b) Provide energy for movement of tail
(c) Provide energy for fat formation
(d) Both (a) and (b)

Answer: D

Question. Female gamete mother cells are known as
(a) Primary oocyte
(b) Secondary oocyte
(c) Oogonia
(d) Ovum

Answer: C

Question. Secondary follicle is surrounded by
(a) Theca only
(b) More granulosa cells layer and new theca
(c) Only one granulosa layer
(d) Zona pellucida

Answer: B

Question. Primary oocyte grows in size and completes its first meiotic division in which stage
(a) Primary follicle
(b) Secondary follicle
(c) Tertiary follicle
(d) Graffin follicle

Answer: C

Question. The ploidy of oogonia and secondary oocyte respectively is
(a) Both n
(b) Both 2n
(c) n, 2n
(d) 2n, n

Answer: D

Question. Bulk of the nutrient rich cytoplasm that secondary oocyte contains comes from
(a) Graffian follicle
(b) Primary oocyte
(c) Ovum
(d) None of the options

Answer: B

Question. Primary oocyte is formed by
(a) Ovum
(b) Secondary oocyte
(c) Oogonia
(d) Spermatids

Answer: B

Question. Primary follicle surrounds /encloses which of the following cell?
(a) Ovum
(b) Primary oocyte
(c) Oogonia
(d) Spermatids

Answer: B

Question. How many primary follicles are left in both the ovaries at puberty?
(a) 1,20,000 – 1.60,000
(b) 60,000 – 80,000
(c) 10,000 – 20,000
(d) 6,000 – 8,000

Answer: A

Question. Zona pellucida is a layer formed around
(a) Acrosome
(b) Primary oocyte
(c) Secondary oocyte
(d) Graffian follicle

Answer: C

Question. In which of the following menstrual cycle does not take place?
(a) Monkey
(b) Sheep
(c) Apes
(d) Human beings

Answer: B

Question. Labia minora is a part of
(a) Female accessory duct
(b) Female external genetalia
(c) Primary sex organ of female
(d) Male external genita

Answer: B

Question. The opening of vagina is often covered by a membrane called
(a) Scrotum
(b) Hymen
(c) Penis
(d) Labia majora

Answer: B

Question. Clitoris is present at the opening of
(a) Vagina
(b) Penis
(c) Urethra
(d) Cervix

Answer: A

Question. The mammary glands of female contains
(a) Glandular tissue
(b) Fat
(c) Zinc
(d) Both (a) and (b)

Answer: D

Question. The correct sequence of ducts from inside to outside the mammy gland is
(a) Alveoli, mammary duct, mammary tubules. mammary ampulla lactiferous ducts
(b) Alveoli, mammary tubules, mammary ampulla. mammary duct lactiferous ducts
(c) Alveoli, mammary tubules. mammary duct. mammary ampulla lactiferous ducts
(d) Alveoli, mammary duct, mammary ampulla. mammary tubules lactiferous ducts

Answer: C

Question. Semen consists of
(a) Sperms
(b) Seminal plasma
(c) Primary spermatocytes
(d) Both (a) and (b)

Answer: D

Question. Oogenesis is
(a) Formation of spermnogonia
(b) Formation of spermnid
(c) Formation of immature female gamete
(d) Formation of mature female gamete

Answer: D

Question. The innermost layer if uterine lining is known as
(a) Myometrium
(b) Ectometrium
(c) Perimetrium
(d) Endometrium

Answer: D

Question. Which layer of uterine lining exhibits cyclic changes during mei cycle?
(a) Myometrium
(b) Endometrium
(c) Perimetrium
(d) None of the options

Answer: B

Question. In female reproductive system a cushion of fatty tissue covered by skin and pubic hairs is known as
(a) Labia majora
(b) Mons Pubis
(c) Hymen
(d) Clitoris

Answer: B

Question. Gametogenesis in humans is the process in which?
(a) Male produces sperms
(b) Female produces ovum
(c) Male produces pollen
(d) Both (a) and (b)

Answer: D

Question. The Ploidy of spermatogonium is
(a) 2n
(b) n
(c) Initial n and afterwards 2n
(d) None of the options

Answer: A

Question. The ploidy of primary spermatocytes is
(a) n
(b) 2n
(c) Initial n and afterwards 2n
(d) None of the options

Answer: B

Question. The ploidy of secondary spermatocytes is
(a) n
(b) 2n
(c) Initial n and afterwards 2n
(d) None of the options

Answer: A

Question. Each secondary spermatocyte undergoes which type of cell division and gives rise to how many cells
(a) Mitotic. Four
(b) First meiotic. Four
(c) Mitotic. Two
(d) Second meiotic two

Answer: D

Question. Spermiogenesis is the process in which
(a) Primary spermatocytes are formed by spermatogonia
(b) Secondary spermatocytes are formed by spermatids
(c) Spermatids are formed by secondary spermatocytes
(d) Spermatozoa are formed by spermatids

Answer: D

Question. Spermiation is the process in which
(a) Primary spermatocytes are formed by spermatogonia
(b) Secondary spermatocytes are formed by spermatids
(c) Spermands are formed from secondary spermatocytes
(d) Sperms are released from seminiferous tubules

Answer: D