Human Reproduction MCQs Class 12 Biology
Please refer to Chapter 3 Human Reproduction MCQ Class 12 Biology with answers below. These multiple-choice questions have been prepared based on the latest NCERT book for Class 12 Biology. Students should refer to MCQ Questions for Class 12 Biology with Answers to score more marks in Grade 12 Biology exams. Students should read the chapter Human Reproduction and then attempt the following objective questions.
MCQ Questions Class 12 Biology Chapter 3 Human Reproduction
The Human Reproduction MCQ Class 12 Biology provided below covers all important topics given in this chapter. These MCQs will help you to properly prepare for exams.
Question. The process of maturation of reproductive cells of testes in male to form the male gamete or sperm is known as:
(d) none of these
Question. Middle piece of mammalian sperm possess
(a) Mitochondria and centriole
(b) Mitochondria only
(c) Centriole only
(d) Nucleus and mitochondria
Question. Case: A lady is 15 weeks pregnant. Various tests confirm that if her child was born, it would suffer from a serious illness leading to a serious handicap. What is the best-suggested option to this case as per the medical termination of pregnancy (Amendment) Act. 2017?
(a) MTP can’t be performed
(b) MTP can be easily performed without any restrictions.
(c) MTP can be performed only if two registered medical practitioners agree to it.
(d) MTP can be performed only after determination of sex of the baby.
Question. What would happen if vasa deferens of man are cut?
(a) Sperm are non- nucleate
(b) Spermatogenesis does not occur
(c) Semen is without sperms
(d) Sperm are non-motile
Question. GIFT is for:
(a) Embryo implantation after in vitro fertilization.
(b) Egg transfer for in vivo fertilization.
(c) Embryo implantation after in vitro fertilization.
(d) Egg implantation for in vitro fertilization.
Question. Which of the following is not true for gastrula stage of embryonic development in human?
(a) Morphogenic movements of blastomere
(b) Formation of blastocyst with fluid filled cavity
(c) Formation of three primary germinal layers
(d) Formation of epiblast and hypoblast from germinal disc
Question. Which of the following is not an intra-uterine contraceptive?
(a) Multiload 375
(d) Lippes loop
Question. At menopause there is rise in urinary excretion of:
Question. Which of the following is not part of the vulva?
(c) Mons pubis
(d) Labia majora
Question. Absence of sperms in semen is called-
Question. The first meiotic division during oogenesis is completed at the stage of –
(a) Primary oocyte within primary follicle.
(b) Secondary oocyte within secondary follicle.
(c) Primary oocyte within the tertiary follicle.
(d) Secondary oocyte within tertiary follicle.
Question. The hormones that initiate ejection of milk, stimulates milk production and growth of ovarian follicles are respectively known as-
(a) PRL, Oxytocin and LH
(b) PRH, Oxytocin and LH
(c) Oxytocin, PRL and FSH
(d) LH, PRL and FSH
Question. The Graafian follicle contains-
(a) Many oocytes
(b) Many sperms
(c) A single oocyte
(d) Many egg
Question. Which of the germ layers in best abociated with the development of Leant ?
(d) All of these
Question. Which of the following signaling molecules is responsible for erectile function ?
(b) Nitric oxide
(d) Carbon dioxide
Question. Gonads are derived from
(d) Mesoderm & Endoderm
Question. Leydig cells are found in
(c) vasa deferens
Question. Cells of Leyding are found in-
(c) Semi infamous
Question. The differentiation of spermotids into spermatozoa is called-
Question. What in the function of amnions ?
(c) Protection from shock
Question. Which of the following set in developed from endoderm-
(a) Nervous system, unimary bladder, eye
(b) Lira, Panaeas, thymus
(c) Liver, Connective tissue, Least
(d) Thymus, spinal cord, nervous system
Question. At menopause there is rise in urinary excretion of-
Question. Sugar fructose in present in the secretion of –
(a) Bartholin’s gland
(b) Cowpeis gland
(c) Perioned gland
(d) Prostate gland
Question. Mark the odd one :
(b) Corpus luteum
(d) Graafian follicle.
Question. Placenta in human is
Question. The connective tissue called tunica albuginea covers the
(d) primary follicle
Question. Which of the statements is correct?
(a) hCG, hPL and relaxin are produced in women only during pregnancy.
(b) During pregnancy the levels of other hormones like estrogens, progestogens, cortisol, prolactin, thyroxine, etc., are increased severalfn’ds in the maternal blood.
(c) Increased production of these hormones is essential for supporting the fetal growth, metabolic changes in the mother and maintenance of pregnancy.
(d) All of the above
Question. In which animal, the testes are abdominal during embryonic stages but migrate to scrotum just before birth where they remain throughout life
Question. Abdominal passage which connects abdominal cavity with the scrotal sac in mammals is known as
(a) Spermatic canal
(b) Neurenteric canal
(c) Inguinal canal
(d) Haversian canal.
Question. The structure formed after release of ova from graafian follicles and secretory in nature is
(a) Corpus callosum
(b) Corpus luteum
(c) Corpus albicans
(d) Corpus stratum.
Question. Ovuiation takes place by
Question. Clitoris in mammals is
(a) Homologous to penis
(b) Analogous to penis
(c) Functional penis in female
(d) Non-functional penis in male.
Question. When released from ovary, human egg contains
(a) Only Y chromosome
(b) 2 X chromosome
(c) 1 X chromosome
(d) XY chromosomes
Question. Number of spermatozoan, a single primary spermatocyte produces in spermatogenesis, is
Question. A gland associated with the male reproductive organs of mammals is
(a) Prostate gland
(b) Phallic gland
(c) Mushroom gland
(d) Conglobate gland.
Question. Which one is primary sex organ?
Question. Human placenta is derived from
Question. Tunica albuginea covers
Question. Path of sperms from penis to the site of fertilization is :
(c) Vagina – uterus – oviduct – cervix
(d) Vagina – oviduct – cervix – uterus
Question. Theprocess of releasing the ripe female gamete from the ovary is called
Question. Failure of descending testes into the scrotum is known as
Question. A human female has the maximum number of primary oocytes in her ovaries-
(a) At birth
(b) Just prior to puberty
(c) Early in her fertile years
(d) Midway through her fertile years
Question. Which part of the male reproductive system is the place where sperm complete the maturation process?
(a) the prosate gland
(b) the epididymis
(c) the vas deferens
(d) the penis
Question. Which of the following develops from endoderm?
Question. All tissues can be formed from
(d) stem cells
Question. Corpus luteum produces
Question. In a mamm an sperm, spirally arranged mitochondria around the axial filament are present in the region of
(b) Middle piece
(c) Principal piece of tail
(d) End piece of tail
Question. The duct opening at the tip of the nipple is
(b) lactiferous duct
Question. The cavity of gastru la is called
Question. An accessory genital gland is
(a) seminal vesicle
(b) Cowper’s gland
(c) prostate gland
(d) all of these
Question. Sperms of mammals depend for movement on
(a) Only tail
(b) Middle piece
(c) Head only
(d) Tail & middle piece.
Question. Why can’t a woman get pregnant again during pregnancy?
(a) A woman ovulates during pregnancy, but the oviducts are plugged with protective mucus to prevent sperm from entering.
(b) High levels of HCG in women’s bodies kill sperm.
(c) Awoman can’t have intercourse during pregnancy due to the presence of a protective mucus plug that develops in the cervix.
(d) High levels of estrogen and progesterone, secreted by the corpus luteum or placenta during pregnancy, inhibit the secretion of gonadotropins and prevent ovulation.
Question. Foetal membranes provide
(a) Protection of embryo
(b) Nutrition of embryo
(c) Respiration of embryo
(d) All he above.
Question. Estrogen and progesterone are secreted by
Question. Fertilizing protein is found on
(b) sperm head
(c) sperm surface
(d) egg membrane
Question. The sertoli cells are located in
(c) Seminiferous tubules
(d) Germinal epithelium.
Question. Which of the following groups of organ develop from mesoderm-
(a) Nervous system, epidermis, internal ear
(b) Thyroid, pancreas kidney
(c) Pineal gland, stomoedarum
(d) Heat, spleen, ganads
Question. In human beings
(a) Chorion and Amnionar& well-developed
(b) Allantois and Yolk sap are less developed
(c) Yolk cell does not have yolk
(d) All the above.
Question. Below urinary bladder is situated
(a) seminal vesicle
(c) prostate gland
Question. Termination of gastrulation is hidica”ifed by
(a) Obliteration of blastocoel
(b) Obliteration of archenteron
(c) Closure of blastopore
(d) Closure of neural tube.
Question. Which of the following events occurs at the same time that menstruation is beginning?
(a) The levels of LH and FSH are “spiking.”
(b) The levels of estrogen and progesterone in the ovarian hormone cycle are on the rise.
(c) The corpus luteum is degenerating.
(b) Ovulation is occurring.
Question. Human egg in-
Question. The mammalian egg shows_______ cleavage-
(a) Holoblastic equal
(b) Holdsantic unequal
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