MCQs For NCERT Class 12 Biology Chapter 3 Human Reproduction

Please refer to the MCQ Questions for Class 12 Biology Chapter 3 Human Reproduction with Answers. The following Human Reproduction Class 12 Biology MCQ Questions has been designed based on the latest syllabus and examination pattern for Class 12. Our experts have designed MCQ Questions for Class 12 Biology with Answers for all chapters in your NCERT Class 12 Biology book.

Human Reproduction Class 12 MCQ Questions with Answers

See below Human Reproduction Class 12 Biology MCQ Questions, solve the questions and compare your answers with the solutions provided below.

Question. If for some reason, the vasa efferentia in the human reproductive system get blocked, the gametes will not be transported from                         
(a) testes to epididymis
(b) epididymis to vas deferens
(c) ovary to uterus
(d) vagina to uterus. 

Question. Sertoli cells are found in                               
(a) ovaries and secrete progesterone
(b) adrenal cortex and secrete adrenaline
(c) seminiferous tubules and provide nutrition to germ cells
(d) pancreas and secrete cholecystokinin. 

Question. Vasa efferentia are the ductules leading from                               
(a) testicular lobules to rete testis
(b) rete testis to vas deferens
(c) vas deferens to epididymis
(d) epididymis to urethra. 

Question. The shared terminal duct of the reproductive and urinary system in the human male is               
(a) urethra
(b) ureter
(c) vas deferens
(d) vasa efferentia. 

Question. The Leydig’s cells as found in the human body are the secretory source of                         
(a) progesterone
(b) intestinal mucus
(c) glucagon
(d) androgens. 

Question. Seminal plasma in humans is rich in                                               
(a) fructose and calcium but has no enzymes
(b) glucose and certain enzymes but has no calcium
(c) fructose and certain enzymes but poor in calcium
(d) fructose, calcium and certain enzymes

Question. Male hormone is produced in the testis by cells of                                           
(a) Sertoli
(b) epithelial
(c) spermatocytes
(d) Leydig. 

Question. Location and secretion of Leydig’s cells are                         
(a) liver-cholesterol
(b) ovary-estrogen
(c) testis-testosterone
(d) pancreas-glucagon.

Question. The part of Fallopian tube closest to the ovary is                                 
(a) isthmus
(b) infundibulum
(c) cervix
(d) ampulla

Question. Seminal plasma in human males is rich in                                               
(a) fructose and calcium
(b) glucose and calcium
(c) DNA and testosterone
(d) ribose and potassium. 

Question. Secretions from which one of the following are rich in fructose, calcium and some enzymes?                     
(a) Male accessory glands
(b) Liver
(c) Pancreas
(d) Salivary glands 

Question. Bartholin’s glands are situated                                                 
(a) on the sides of the head of some amphibians
(b) at the reduced tail end of birds
(c) on either side of vagina in humans
(d) on either side of vas deferens in humans

Question. Meiotic division of the secondary oocyte is completed                                       
(a) prior to ovulation
(b) at the time of copulation
(c) after zygote formation
(d) at the time of fusion of a sperm with an ovum

Question. In humans, at the end of the first meiotic division, the male germ cells differentiate into the                       
(a) spermatids
(b) spermatogonia
(c) primary spermatocytes
(d) secondary spermatocytes.

Question. Sertoli cells are regulated by the pituitary hormone known as                                                       
(a) LH
(b) FSH
(c) GH
(d) prolactin.

Question. The middle piece of the sperm contains                                               
(a) proteins
(b) mitochondria
(c) centriole
(d) nucleus. 

Question. How many sperms are formed from a secondary spermatocyte?                                               
(a) 4
(b) 8
(c) 2
(d) 1

Question. Which of the following layers in an antral follicle is acellular?                                   
(a) Stroma
(b) Zona pellucida
(c) Granulosa
(d) Theca interna 

Question. Which of the following cells during gametogenesis is normally diploid ?                                     
(a) Spermatogonia
(b) Secondary polar body
(c) Primary polar body
(d) Spermatid

Question. Egg is liberated from ovary in                                         
(a) secondary oocyte stage
(b) primary oocyte stage
(c) oogonial stage
(d) mature ovum stage.

Question. Which of the following hormone levels will cause release of ovum (ovulation) from the Graffian follicle?   
(a) High concentration of Estrogen
(b) High concentration of Progesterone
(c) Low concentration of LH
(d) Low concentration of FSH

Question. Changes in GnRH pulse frequency in females is controlled by circulating levels of                                         
(a) progesterone only
(b) progesterone and inhibin
(c) estrogen and progesterone
(d) estrogen and inhibin. 

Question. Which of the following events is not associated with ovulation in human female?                                         
(a) Release of secondary oocyte
(b) LH surge
(c) Decrease in estradiol
(d) Full development of Graafian follicle 

Question. The main function of mammalian corpus luteum is to produce                                           
(a) estrogen only
(b) progesterone
(c) human chorionic gonadotropin
(d) relaxin only. 

Question. Menstrual flow occurs due to lack of                                               
(a) oxytocin
(b) vasopressin
(c) progesterone
(d) FSH. 

Question. The secretory phase in the human menstrual cycle is also called                                             
(a) luteal phase and lasts for about 6 days
(b) follicular phase and lasts for about 6 days
(c) luteal phase and lasts for about 13 days
(d) follicular phase and lasts for about 13 days

Question. About which day in a normal human menstrual cycle does rapid secretion of LH (popularly called LH surge) normally occurs?                                   
(a) 14^th day
(b) 20^th day
(c) 5^th day
(d) 11^th day

Question. Select the incorrect statement.                                         
(a) LH and FSH decrease gradually during the follicular phase.
(b) LH triggers secretion of androgens from the Leydig cells.
(c) FSH stimulates the Sertoli cells which help in spermiogenesis.
(d) LH triggers ovulation in ovary

Question. Identify the correct statement on ‘inhibin’.                                               
(a) Is produced by granulosa cells in ovary and inhibits the secretion of LH
(b) Is produced by nurse cells in testes and inhibits the secretion of LH
(c) Inhibits the secretion of LH, FSH and prolactin
(d) Is produced by granulosa cells in ovary and inhibits the secretion of FSH 

Question. Which one of the following is the most likely root cause why menstruation is not taking place in regularly cycling human female?                                     
(a) Maintenance of the hypertrophical endometrial lining
(b) Maintenance of high concentration of sexhormones in the blood stream
(c) Retention of well-developed corpus luteum
(d) Fertilisation of the ovum 

Question. Which one of the following statements is incorrect about menstruation?                                               
(a) At menopause in the female, there is especially abrupt increase in gonadotropic hormones.
(b) The beginning of the cycle of menstruation is called menarche.
(c) During normal menstruation about 40 mL blood is lost.
(d) The menstrual fluid can easily clot.

Question. Withdrawal of which of the following hormones is the immediate cause of menstruation?                           
(a) Progesterone
(b) Estrogen
(c) FSH
(d) FSH-RH 

Question. If mammalian ovum fails to get fertilised, which one of the following is unlikely?                                         
(a) Corpus luteum will disintegrate.
(b) Progesterone secretion rapidly declines.
(c) Estrogen secretion further increases.
(d) Primary follicle starts developing. 

Question. Ovulation in the human female normally takes place during the menstrual cycle                                   
(a) at the mid secretory phase
(b) just before the end of the secretory phase
(c) at the beginning of the proliferative phase
(d) at the end of the proliferative phase. 

Question. In the human female, menstruation can be deferred by the administration of                                             
(a) combination of FSH and LH
(b) combination of estrogen and progesterone
(c) FSH only
(d) LH only. 

Question. After ovulation Graafian follicle regresses into                                   
(a) corpus artesia
(b) corpus callosum
(c) corpus luteum
(d) corpus albicans.

Question. In the fertile human female, approximately on which day of the menstrual cycle does ovulation take place?                                 
(a) Day 14
(b) Day 18
(c) Day 1
(d) Day 8

Question. The mammalian corpus luteum produces                               
(a) luteotrophic hormone
(b) luteinising hormone
(c) estrogen
(d) progesterone. 

Question. Which set is similar?                                       
(a) Corpus luteum – Graafian follicles
(b) Sebum – Sweat
(c) Bundle of His – Pacemaker
(d) Vitamin B7 – Niacin

Question. Which part of ovary in mammals acts as an endocrine gland after ovulation?                                             
(a) Stroma
(b) Germinal epithelium
(c) Vitelline membrane
(d) Graafian follicle 

Question. In the 28 day human ovarian cycle, the ovulation takes place typically on                                       
(a) day 14 of the cycle
(b) day 28 of the cycle
(c) day 1 of the cycle
(d) day 5 of the cycle.

Question. Extrusion of second polar body from egg occurs                                       
(a) simultaneously with first cleavage
(b) after entry of sperm but before fertilisation
(c) after fertilisation
(d) before entry of sperm into ovum.

Question. Capacitation occurs in                                                     
(a) epididymis
(b) vas deferens
(c) female reproductive tract
(d) rete testis. 

Question. Fertilisation in humans is practically feasible only if                                           
(a) the ovum and sperms are transported simultaneously to ampullary-isthmic junction of the cervix
(b) the sperms are transported into cervix within 48 hrs of release of ovum in uterus
(c) the sperms are transported into vagina just after the release of ovum in fallopian tube
(d) the ovum and sperms are transported simultaneously to ampullary-isthmic junction of the fallopian tube. 

Question. In human females, meiosis-II is not completed until                                         
(a) uterine implantation
(b) birth
(c) puberty
(d) fertilisation.

Question. Capacitation refers to changes in the                                       
(a) ovum after fertilisation
(b) sperm after fertilisation
(c) sperm before fertilisation
(d) ovum before fertilisation. 

Question. A change in the amount of yolk and its distribution in the egg will affect                                         
(a) pattern of cleavage
(b) number of blastomeres produced
(c) fertilisation
(d) formation of zygote. 

Question. Grey crescent is the area                                   
(a) at the point of entry of sperm into ovum
(b) just opposite to the site of entry of sperm into ovum
(c) at the animal pole
(d) at the vegetal pole. 

Question. What is true for cleavage?                                   
(a) Size of embryo increases
(b) Size of cells decreases
(c) Size of cells increases
(d) Size of embryo decreases

Question. Blastopore is the pore of                                     
(a) archenteron
(b) blastocoel
(c) coelom
(d) alimentary canal