MCQ Question for Class 12 Biology Chapter 3 Human Reproduction

Check the below NCERT MCQ Class 12 Biology Chapter 3 Human Reproduction with Answers available with PDF free download. MCQ Questions for Class 12 Biology with Answers were prepared based on the latest syllabus and examination pattern issued by CBSE, NCERT and KVS. Our teachers have provided below Human Reproduction Class 12 Biology MCQs Questions with answers which will help students to revise and get more marks in exams

Human Reproduction Class 12 Biology MCQs Questions with Answers

Refer below for MCQ Class 12 Biology Chapter 3 Human Reproduction with solutions. Solve questions and compare with the answers provided below

Question. Sex of a human baby is determined by the
(a) Father
(b) Mother
(c) Any one of them
(d) Is independent of father and mother

Question. The zygote after fertilisation moves towards
(a) Ampulla
(b) Ovary
(c) Infundibulum
(d) Uterus

Question. The zygote further divides by
(a) Mitotic division
(b) Meiotic division
(c) Both (a) and (b)
(d) None of these

Question. The modula continues to divide and form
(a) Blastocyst
(b) Morula
(c) Trophoblast
(d) Blastomere

Question. The inner cells of biastocyst are called
(a) Inner cell mass
(b) Morula
(c) Trophoblast
(d) None of these

Question. Embryo is formed by differentiation of which of cell
(a) Trophoblast
(b) Inner cell mass of blastocyst
(c) Morula inner layer
(d) None of these

Question. Finger like projection that appear on trophoblast after implai are known as
(a) Isthmus
(b) Chorionic
(c) Chorionic villi
(d) Inner cell mass

Question. Placenta is formed by the interdigitation of
(a) Chorionic villi with trophoblast
(b) Chorionic villi with fallopian tube wall
(c) Chorionic villi with uterine wall
(d) Chorionic villi with inner cell mass

Question. Umbilical cord joint
(a) Embryo to cervix
(b) Embryo to uterus
(c) Placenta to uterus
(d) Embryo to placenta

Question. Which of the following hormone is not pregnancy time specific?
(a) Human chorionic gonadotropin
(b) Human placental lactogen
(c) Estrogen and progesterone
(d) Relaxin

Question. After implantation the inner cell mass differentiates into how many layers
(a) Two
(b) One
(c) Three
(d) Four

Question. The outermost layer of embryo is known as
(a) Ectoderm
(b) Epiderm
(c) Mesoderm
(d) Periderm

Question. Limbs and digits of foetus are formed after how many month of pregnancy
(a) One month
(b) Two months
(c) Three months
(d) Seven months

Question. The first movement and hair appear after
(a) One month
(b) Two months
(c) Three months
(d) Five months

Question. The gestation period for human pregnancy is
(a) 36 weeks
(b) 30 weeks
(c) 9 months
(d) Both (a) and (c)

Question. Signals for parturition originates from
(a) Fully developer foetus
(b) Placenta
(c) Cervix
(d) Both (a) and (b)

Question. The mill produced by the mother during the initial few days is called
(a) Perimetrium
(b) Colostrum
(c) Lactose milk
(d) None of these

Question. Parturition is a process having
(a) Neural control
(b) Endocrine control
(c) Muscular control
(d) Both (a) and (b)

Question. Which layer of uterine lining exhibits strong contraction during parturition?
(a) Myometrium
(b) Endometrium
(c) Perimetrium
(d) None of these

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. 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 extra-embryonic membranes of mammalian embryo are derived from 
(a) trophoblast   
(b) follicle cells
(c) inner cell mass
(d) formative cells

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

Question. In human female, the blastocyst
(a) forms placenta even before implantation
(b) gets implanted into uterus 3 days after ovulation
(c) gets nutrition from uterine endometrial secretion only after implantation
(d) gets implanted in endometrium by the trophoblast cells. 

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. 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. Both corpus luteum and macula lutea are 
(a) found in human ovaries
(b) a source of hormones
(c) characterized by a yellow colour 
(d) contributory in maintaining pregnancy

Question. In an egg, the type of cleavage is determined by
(a) the amount and distribution of yolk
(b) the number of egg membranes
(c) the shape and size of the sperm 
(d) the size and location of the nucleus.

Question. Spot the odd one out from the following structures with reference to the male reproductive system.
(a) Rate testis
(b) Epididymis
(c) Vasa efferentia
(d) Isthmus 

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

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

Question. Meroblastic cleavage is a division which is
(a) horizontal
(b) partial/parietal 
(c) total
(d) spiral.

Question . A human female reaches menopause aroung the age of
(a) 50 years 
(b) 15 years
(c) 70 years
(d) 25 years.

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. Women who consumed the drug thalidomide for relief from vomiting during early months of pregnancy gave birth to children with 
(a) no spleen
(b) hare-lip
(c) extra fingers and toes
(d) under developed limbs 

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

Question. Which of the following is true regarding sperm? 
(a) Fertilizin: For penetrating egg membrane
(b) Hyalurodinase: For penetrating egg membrane 
(c) Acrosin: Dissolves corona radiata
(d) Capacitation: Takes place in penis

Question. What happens during fertilisation in humans after many sperms reach close to the ovum?
(a) Secretions of acrosome helps one sperm enter cytoplasm of ovum through zona pellucida. 
(b) All sperms except the one nearest to the ovum lose their tails.
(c) Cells of corona radiata trap all the sperms except one.
(d) Only two sperms nearest the ovum penetrate zona pellucida.

Question. The first movements of the fetus and appearance of hair on its head are usually observed during which month of pregnancy?
(a) Fourth month
(b) Fifth month   
(c) Sixth month
(d) Third month

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

Question. Meroblastic cleavage refers to which type of division of egg 
(a) Complete
(b) Spiral
(c) Incomplete 
(d) Horizontal

Question. Sperm and egg nuclei fuse due to
(a) base pairing of their DNA and RNA
(b) formation of hydrogen bonds
(c) mutual attraction due to differences in electrical charges
(d) attraction of their protoplasts. 

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. All of the following statements concerning pregnancy are accurate EXCEPT 
(a) the detection of human chorionic gonadotropin in the urine forms the basis for pregnancy tests.
(b) the cyclic release of pituitary gonadotropins and ovarian steroids is continued. 
(c) the mammary gland tissue of the pregnant woman is stimulated to develop by placental hormones.
(d) the corpus luteum of pregnancy maintains the uterus until the placenta is well established.

Question. The difference between spermiogenesis and spermiation is
(a) in spermiogenesis spermatids are formed, while in spermiation spermatozoa are formed
(b) in spermiogenesis spermatozoa are formed, while in spermiation spermatids are formed
(c) in spermiogenesis spermatozoa from Sertoli cells are released into the cavity of seminiferous tubules, while in spermiation spermatozoa are formed
(d) in spermiogenesis spermatozoa are formed, while in spermiation spermatozoa are released from Sertoli cells into the cavity of seminiferous tubules.   

Question. Hormones secreted by the placenta to maintain pregnancy are
(a) hCG, hPL, progestogens, prolactin
(b) hCG, hPL, estrogens, relaxin, oxytocin
(c) hCG, hPL, progestogens, estrogens   
(d) hCG, progestogens, estrogens, glucocorticoids.

Question .Ovulation in the human female normally takes place during the menstrual cycle
(a) at the mind 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. Egg is liberated from ovary in
(a) secondary oocyte stage 
(b) primary oocyte stage
(c) oogonial stage
(d) mature ovum stage.

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

Question. Which one of the following statements is false in respect of viability of mammalian sperm?
(a) Sperm is viable for only up to 24 hours. 
(b) Survival of sperm depends on the pH of the medium and is more active in alkaline medium.
(c) Viability of sperm is determined by its motility.
(d) Sperms must be concentrated in a thick suspension.

Question. The membranous cover of the ovum at ovulation is
(a) corona radiate 
(b) zona radiata
(c) zona pellucida
(d) chorion.

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. The extra embryonic membranes of the mammalian embryo are derived from
(a) trophoblast     
(b) inner cell mass
(c) formative cells
(d) follicle cells.

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. 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. The fetal ejection reflex in humans triggers the release of
(a) oxytocin from fetal pituitary
(b) human chorionic gonadotropin (hCG) from placenta
(c) human placental lactogen (hPL) from placenta
(d) oxytocin from maternal pituitary.   

Question. In spermatogenesis, reduction division of chromosome occurs during conversion of
(a) spermatogonia to primary spermatocytes
(b) primary spermatocytes to secondary spermatocytes   B
(c) secondary spermatocytes to spermatids
(d) spermatids to sperms.

Question 1st polar body is formed at which stage of oogenesis ?
(a) 1st meiosis   
(b) 2nd mitosis
(c) 1st mitosis
(d) Differentiation

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