Biology MCQ
#2 Biology Class 12 Chapter 2- Reproduction in Lower and Higher Animals MHTCET / NEET MCQ
2- Reproduction in Lower and Higher Animals
(1) The number of nuclei present in a zygote is .......... .
(a) two(b) one(c) four(d) eight
Ans- one
(2) Which of these is the male reproductive
organ in human ?
(a) Sperm(b) Seminal fluid(c) Testes(d) Ovary
Ans- Testes
(3) Attachment of embryo to the wall of the uterus is known as .......... .
(a) fertilization(b) gestation(c) cleavage(d) implantation
Ans- implantation
(4) Rupturing of follicles and discharge of ova is known as ......... .
(a) capacitation(b) gestation(c) ovulation(d) copulation
Ans- ovulation
(5) In human females, the fertilized egg gets implanted in uterus ........... .
(a) after about 7 days of fertilization(b) after about 30 days of fertilization(c) after about two months of fertilization(d) after about 3 weeks of fertilization
Ans- after about 7 days of fertilization
(6) Test tube baby technique is called ........... .
(a) In vivo fertilization(b) In situ fertilization(c) In Vitro Fertilization(d) Artificial Insemination
Ans- In Vitro Fertilization
(8) Presence of beard in boys is a .......... .
(a) primary sex organ(b) secondary sexual character(c) secondary sex organ(d) primary sexual character
Ans- secondary sexual character
(9) Gemmule formation takes place in .......... .
(a) Hydra(b) Spongilla(c) Planaria(d) Human being
Ans- Spongilla
(10) Which part of ovary in mammals acts as an endocrine gland after ovulation ?
(a) stroma(b) germinal epithelium(c) vitelline membrane(d) graafian follicle
Ans- graafian follicle
(11) Cessation of menstrual cycle in female is
called ……… .
(a) lactation(b) ovulation(c) menarche(d) menopause
Ans- menopause
(12) Capacitation of sperms occurs in ……… .
(a) vas deferens(b) vas efferens(c) vagina(d) ejaculatory duct
Ans- vagina
(13) How many sperms are formed from a
secondary spermatocyte ?
(a) 4(b) 8(c) 2(d) 1
Ans- 2
(14) The middle piece of the sperm contains ……… .
(a) proximal centriole(b) nucleus(c) mitochondria(d) distal centriole
Ans- mitochondria
(15) About which day in a normal human menstrual cycle does rapid secretion of LH (popularly called LH surge) normally occurs ?
(a) 14th day(b) 20th day(c) 5th day(d) 11th day
Ans- 14th day
(16) Morphogenetic movements occur during ……… .
(a) blastulation(b) gastrulation(c) fertilization(d) cleavage
Ans- gastrulation
(17) The technique used to block the passage of sperm in male is ……… .
(a) tubectomy(b) vasectomy(c) coitus interruptus(d) rhythm method
Ans- vasectomy
(18) Planaria reproduces asexually through ……… .
(a) budding(b) gemmule formation(c) regeneration(d) binary fission
Ans- regeneration
(19) The role of Leydig cells is ……… .
(a) nourishment of sperms(b) to give motility to sperms(c) synthesis of testosterone(d) to undergo spermatogenesis
Ans- synthesis of testosterone
(20) Chancre are the primary lesions caused by ……… .
(a) Neisseria gonorrhoeae(b) Treponema pallidum(c) Plasmodium vivax(d) Salmonella typhi
Ans- Treponema pallidum
(21) Smooth muscles lining the wall of scrotum are called ……… .
(a) detrusor muscles(b) dartos muscles(c) gluteal muscles(d) latissimus dorsi muscles
Ans- dartos muscles
(22) The trophoblast cells in contact with embryonal knob are called ……… .
(a) inner mass cells(b) blastomere(c) amniogenic cells(d) cells of Rauber
Ans- cells of Rauber
(23) The external layer of collagenous connective tissue of human testis is ……… .
(a) tunica vasculosa(b) tunica vaginalis(c) tunica granulosa(d) tunica albuginea
Ans- tunica albuginea
(24) Which of the following is mesodermal in origin ?
(a) Retina(b) Enamel of teeth(c) Heart(d) Liver
Ans- Heart
(25) Pregnancy in second trimester is maintained by ……… .
(a) LH (luteinizing hormone)(b) progesterone(c) estrogen(d) hCG (human Chorionic Gonadotropin)
Ans- progesterone
(26) In human foetus, the heart begins to beat at developmental age of ……… .
(a) 4th week(b) 3rd week(c) 6th week(d) 8th week
Ans- 6th week
(27) ……… contribute about 60% of the total volume of the semen.
(a) Prostate gland(b) Cowper’s glands(c) Seminal vesicles(d) Bartholin’s glands
Ans- Seminal vesicles
(28) Which of the following is hormone releasing IUD ?
(a) Lippes loop(b) Cu 7(c) LNG 20(d) Multiload 375
Ans- LNG 20
(29) Which of the following is incorrect regarding vasectomy ?
(a) Vasa deferentia is cut and tied(b) Irreversible sterility(c) No sperm occurs in seminal fluid(d) No sperm occurs in epididymis
Ans- No sperm occurs in epididymis
(30) The test-tube baby programme employs which one of the following techniques ?
(a) Gamete intra fallopian transfer (GIFT)(b) Zygote intra fallopian transfer (ZIFT)(c) Intra cytoplasmic sperm injection (ICSI)(d) Intra uterine insemination (IUI)
Ans- Zygote intra fallopian transfer (ZIFT)
(31) Medical Termination of Pregnancy (MTP) is considered safe up to how many weeks of pregnancy ?
(a) 8 weeks(b) 12 weeks(c) 24 weeks(d) 6 weeks
Ans- 12 weeks
(32) ‘Saheli’, an oral contraceptive pill is to be taken ……… .
(a) daily(b) weekly(c) quarterly(d) monthly
Ans- weekly
(33) The role of copper releasing IUDs is to ……… .
(a) inhibit ovulation(b) prevent fertilization(c) inhibit implantation of blastocyst(d) inhibit gametogenesis
Ans- prevent fertilization
(34) The phenomenon of nuclear fusion of sperm and egg is known as ……… .
(a) karyogamy(b) parthenogenesis(c) vitellogenesis(d) oogenesis
Ans- karyogamy
(35) Acrosome of spermatozoa is formed from ……… .
(a) lysosomes(b) Golgi bodies(c) ribosomes(d) mitochondria
Ans- Golgi bodies
(36) Which of the following undergoes spermiogenesis ?
(a) Spermatids(b) Spermatogonia(c) Primary spermatocytes(d) Secondary spermatocytes
Ans- Spermatids
(37) In mammals, the estrogens are secreted by the graafian follicle from its ……… .
(a) theca externa(b) theca interna(c) membrane granulosa(d) corona radiata
Ans- theca interna
(38) Which hormone is essential for maintenance of the endometrium of uterus ?
(a) FSH(b) LH(c) Progesterone(d) Estrogen
Ans- Progesterone
(39) Which of the following cells during gametogenesis is normally diploid ?
(a) Spermatid(b) Spermatogonia(c) Second polar body(d) Secondary oocyte
Ans- Spermatogonia
(40) Fertilization takes place at ……… .
(a) cervix(b) ampulla(c) isthmus(d) vagina
Ans- ampulla
(41) In mammals, failure of testes to descend
into scrotum is known as ……… .
(a) paedogenesis(b) castration(c) cryptorchidism(d) impotency
Ans- cryptorchidism
(42) Polar body is produced during the formation of ……… .
(a) sperm(b) secondary oocyte(c) oogonium(d) spermatocytes
Ans- secondary oocyte
(43) Menstrual flow occurs due to lack of ……… .
(a) vasopressin(b) progesterone(c) FSH(d) oxytocin
Ans- progesterone
(44) Approximately how many eggs are produced by a normal healthy human female up to the age of 25 years if the age of menarche is 12 years ?
(a) 169(b) 416(c) 240(d) 100
Ans- 169
(45) In humans, at the end of the first meiotic division, the male germ cells differentiate into the ……… .
(a) spermatids(b) spermatozoa(c) primary spermatocytes(d) secondary spermatocytes
Ans- Secondary spermotocytes
(46) The part that carries sperms from testis to epididymis is ……… .
(a) rete testis(b) vasa efferentia(c) vasa differentia(d) ejaculatory ducts
Ans- vasa differentia
(47) Which period of menstrual cycle is called risky period of conception ?
(a) 3rd to 7th day(b) 7th to 13th day(c) 10th to 17th day(d) 15th to 25th day
Ans- 10th to 17th day
(48) Which hormone confirms pregnancy ?
(a) Progesterone(b) Estrogen(c) hCG(d) LH
Ans- hCG
