Human Reproduction Questions

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Human Reproduction Questions

List of human reproduction Questions

Question No Questions Class
1 How is human male represented?
A. ( x x )
B. xo
c. ( x y )
2 Study the statements given below.
X: In humans, the gamete contributed by the male determines whether the
child produced will be male or female.
Y: Sex in humans is a polygenic trait depending upon a cumulative effect of
some genes on X chromosome and
some on Y chromosome.
A. If both ( x ) and ( Y ) are true and the ( Y ) is the correct explanation of the X.
B. If both ( x ) and ( Y ) are true but ( Y ) is not the correct explanation of the X.
c. If ( x ) is true but ( Y ) is false
D. If both ( x ) and ( Y ) are false
3 Identify the parts as ( A, B, C, D ) in the
given diagram
A . A- Oviduct, B- Uterus, C- Oviduct, D- Ovary
B. A- Cervix, B- Uterus, C- – Ovary, D- Tumor
C. A- Uterus, B- Uterine cavity, C- Oviducal funnel, D Ovary
D. A- Cervix, B- Uterine cavity, C- Fallopian tube, D- Ovary
4 In which one of the following parts of the female reproductive system fertilization takes place?
A. Uterus
B. oviduct
c. vagina
D. Ovary
E. None of these
5 Menstruation is due to sudden
A. Reduction of FSH
B. Increase of LH
C. Reduction in estrogen and progesteron
D. None of the above
6 If fertilization doesn’t occur, the ovum is
released out of
A. Urine
B. Menstrual cycle
c. Sweat
D. None of the above
7 “The sex of a newborn child is a matter
of chance and none of the parents may
be considered responsible for it.” Justify this statement with the help of flow chart showing determination of sex of a newborn.
8 Give one significant difference between
puberty and menarche.
9 Heterogamety or formation of two types of gametes is found in.
A. Male Drosophila
B. Female bird
c. Female Drosophila
D. Both A and B
10 The number of chromosomes in parents
and offsprings of a particular species remains constant due to
A. Doubling of chromosomes after zygote formation
B. Halving of chromosomes during gamete formation
c. Doubling of chromosomes after gamete formation
D. Halving of chromosomes after gamete formation
11 In our society the women are often
blamed for giving birth to daughters. Can you explain why this is not correct?
12 Theory of heterogamesis for sex determination was proposed by.
A. Morgan
B. Darwin
c. correns
D. Bridges
13 The only haploid stage in an animal life cycle is the
A. zoospores
B. Spores
c. Gametes
D. None of the above
14 How is sex determined in humans?? 12
15 Fertilization occurs in human, rabbit
and other placental mammals in
A. Ovary
B. Uterus
c. Fallopian tubes
D. vagina
16 Explain how equal genetic contribution
of male and female parents is ensured
in the progeny.
17 A woman can give birth to how many
children in her lifetime?
18 Puberty occurs in females at the age of
A . ( 8-10 ) years
B. 11- 14 years
c. ( 15-17 ) years
D. 18 – 20 years
19 Write about Female Reproductive
20 Match the following.
List-II List-I
(A) Simple squamous
(I) Ureters epithelium
(B) Simple cuboidal
(II) Epididymis epithelium
( (C) )
Non-ciliated simple
(III) Lining of columnar epithelium ( quad ) alveoli of lungs
Lining of
(D) Transitional epithelium (IV) Li
thyro thyroid vesicles
( (E) )
Pseudostratified non-
(V) Mucosa of stomach ciliated columnar and epithelium intestine
( mathbf{A} cdot A-(1), B-(11), C-(1 V), D-(111), E-(V) )
B. ( A-(V), B-(111), C-(11), D-(I V), E-(1) )
C ( cdot A-(11), B-(1 V), C-(111), D-(V), E-(1) )
D. ( A-(111), B-(I V), C-(V), D-(1), E-(11) )
21 Short / Long Answer question Type :
Write short notes on Menarche
22 Given below are the three statements
each with two blanks. Select the option
which correctly fills up the blank in any two statements. (A) Each seminiferous
tubule is lined on Its inside by two types of cells called_(i)_and_(ii).
(B) The seminiferous tubules open into the ( (mathrm{i})_{-} ) through ( (mathrm{i} mathrm{i}) )
(C) The enlarged end of penis called the ( underline{text { (i) }} ) is covered by a loose fold of skin called the ( (text { ii }) )
A. (A)-(i)spermatogonia,(ii) follicular cells
(B)-(i) vas deferens,
(ii) urethral meatus
B. (B)-(i) vasa efferentia, (ii) rete testis
(C)-(i) glans penis
(ii) foreskin
C. (A)-(i) spermatogonia,
(ii) Sertoli cells
(C)-(i) urethral meatus,
(ii) scrotum
D. (A)-(i) spermatocytes, (ii) oogonia
(B)-(i) rete testis, (ii) vasa efferentia
23 Which one of the following is the most likely root cause, why menstruation is not taking place in a human female, having regular menstrual cycle?
A. Fertilization of the ovum
B. Maintenance of the hypertrophic endometrial lining
c. Maintenance of high concentration of sex-hormones in the blood stream
24 Role of chromosomes in sex
determination was proposed by
A. Sutton and Boveri
B. Henking
c. Mc clung
D. Morgan
25 The sex of a child is determined by the
A. Chromosome of the father
B. Chromosome of the mother
c. Rh factor of the parents
D. Blood group of the father
26 What is menstruation? Why does it
27 In which group of organism, the male has one less chromosome than female?
A. Roundworms
B. All insects
c. Birds
D. Reptiles
E. Round worms and few insects
28 In human sex determination, the key factor is
A. Y chromosome
B. X chromosome
c. Both A and B
D. None of the above
29 The presence or absence of hymen is not reliable indicator of virginity or sexual experience.
A. True
B. False
30 Observe the given figure and answer
Label A and B.
4. A- sperm, B- ovum
B. A- ovum, B- sperm
C. A- ovary, B- spern
D- ovary, B- testis
31 Withdrawal of which of the following
hormones is the immediate cause of
A. Estrogen
D. Progesterone
32 Which of the following lead to pregnancy and development of embryo.
(i) Fertilization of egg
(ii) Maturation of egg
(iii) Release of egg
(iv) Embedding of embryo in thickened uterine wall.

Which of the following options gives the correct order of sequence in which they
A ( cdot(i),(i text { i) },(i i),(i v) )
B. (ii), (i), (iii), (iv)
( c cdot(i),(i v),(i),(text { iii) }) )
D. None of the above

33 Plant in which chromosomal basis of
sex determination was discovered first
A. Rumex
B. Melandrium
c. coccinia
D. Sphaerocarpus
34 First menstrual cycle is
A. Parturition
B. Menopause
c. Menarche
D. Implantation
35 Which of the following is a correct
A. Centrolecithal egg – insect
B. Megalecithal egg – eutherian mammals
C. Microlecithal egg – reptiles
D. Alecithal egg – birds
36 On fertilization of egg nucleus with
sperm nucleus
A. First maturation is completed
B. Second maturation is completed
c. Embryo is formed
D. First polar body is formed
37 What is menstruation?
A. Its a women disease recurring every month.
B. Its a normal reproductive process in mature females.
C. When fertilization does not occur, the released egg, and the thickened lining of the uterus along with its blood vessels are shed off
D. Both B and C.
38 dentify the process.
A. Replication
B. Fertilisation
c. Binary fission
D. Budding
39 The diagram given shows the
reproduction processes of 3 organisms ( P, Q ) and ( R . ) Which of the above shows the
process of sexual reproduction being taking place?
A. Only P
B. Only P and Q
c. Only
D. Only P and
40 Give appropriate terms for the onset of
reproduction phase in a female.
41 Write short note on sex determination
in humans.
42 Differentiate between ( ^{prime} Z Z^{prime} ) and ( ^{prime} X Y^{prime} )
type of sex-determination mechanisms.
43 If an egg is not fertilised,it is expelled from the body during 12
44 Give reason for these type of disorder.
What dife beara degensiation of What and ovaries etcrint their growing period
45 Given are some organisms.
(I) Fowl
(II) Humans (III) Grasshopper Following alphabets related to the given
Male homogametic – ( A ) Female heterogametic – ( mathrm{B} ) Male heterogametic – ( C ) Female homogametic – D Which of the following options correctly describes the given animals in terms of sex determination?
( A cdot(text { () } A, B text { (II) } C, D text { (III) } C, D )
B. (I) C, D (II) A, B (III) C, D
C . (I) A, D (II) C, D (III) A, D
D. (I) B, C (II) C, D (III) A, B
46 Very short answer type:
What is double fertilization?
47 How is sex determined in human
48 X0 type of sex determination is seen in
A. Man
B. Grasshopper
c. Drosophila
D. Birds
E. Horses
49 Give the names of four reproductive events that occur after puberty in human beings. 12
50 Differentiate between male and female
51 Explain the sex determination in baby? 12
52 What is formed immediately after
A. Placenta
B. Foetus
c. Embry
D. zygote
53 (a) Select the homologous structures from the combinations given below:
(i) Forelimbs of whales and bats
(ii) Tuber of potato and sweet potato
(iii) Eyes of octopus and mammals
(iv) Thorns of Bougainvillea and tendrils
of Cucurbita
54 When was the first test tube baby born?
A. 2 January 1981
B. 25 July 1978
c. 3 August 1975
D. 4 February 1982
55 Spot the odd one out from the following structures with reference to the male reproductive system.
A. Rete testis
B. Epididymis
c. vasa efferentia
D. Isthmus
56 Estrous cycle is characteristic of
A. Human females
B. Mammalian females
C. Mammalian females other than primates
D. Mammals
57 Explain how sex is determined in human babies. 12
58 Which of the following processes leads to formation of germ layers?
A. Embryogenesis
B. Gastrulation
c. Fertilization
D. None of the above
59 Which one is found in males only?
A. X-chromosome
B. Y-chromosome
c. ( 2 x ) -chromosomes
D. ( x+x ) -chromosomes
60 What is menopause and menarche? 12
61 The given figure shows a diagrammatic
sketch of a portion of human male
reproductive system. Identify the parts labelled as ( A, B, C ) and
D and select the correct option.
A. A-vas deferens, B-seminal vesicle, C-Prostate, DBulbourethral gland
B. A-Vas deferens, B-Seminal vesicle, C-Bulbourethral gland, D-Prostate
c. A-Ureter, B-Seminal vesicle, C-Prostate, DBulbourethral gland
D. A-Ureter, B-Prostate, C-Seminal vesicle, DBulbourethral gland
62 Define fertilization and write the list of
events occuring in human fertilization.
63 If a couple has two boys and one girl, the probability of the next girl child to be born is
A ( cdot frac{1}{4} )
( c cdot frac{1}{2} )
D. ( frac{2}{3} )
64 Egg laid after fertilization is diploid.
A. True
B. False
65 Write the function of Female
Reproductive system
66 In Drosophila the XXY constitution determines
A. Maleness
B. Femaleness
c. Intersex
D. Both A and C
67 Give a short description for
homogametes and heterogametes with example.
68 Genetic identity of human male is known by
A. Nucleolus
B. Cell organelles
c. Autosomes
D. sex chromosomes
69 Mrs. Verma has an autosomal gene pair Bb’ and she contain x-linked gene ‘d’
What is the percentage of gamete, which contain ‘bd’ genes?
A. ( 1 / 2 ) or ( 50 % )
B. 1/4 or 25%
c. 3/4 or 75%
D. 1 or ( 100 % )
70 Sexually transmitted diseases can be prevented by using condoms.
A. True
B. False
71 Explain sex determination in human beings. 12
72 Male child will be born if
A. Father is sexually more excited
B. Sperm of male with Y chromosome fertilizes the egg
C. Sperm of male with ( X ) chromosome fertilizes the egg
D. None of the above
73 After a sperm has penetrated an ovum in the process of fertilisation, entry of further sperms is prevented by
A. Development of the pigment coat
B. Development of the vitelline membrane
c. condensation of yolk
D. Formation of fertilisation membrane
74 Fill up the blanks in the following paragraph by selecting the correct
(i) are the primary female sex organs that produce ( (mathrm{i} mathrm{i}) ) and ( (mathrm{iii}) . ) Each primary
sex organ is about ( ( ) iv ) in length and is
connected to the pelvic wall and uterus
by ( (underline{v}) )
A. (i)-Testes, (ii)-sperms, (iii)-hormones, (iv)-4-5 ( mathrm{cm},(mathrm{v})- ) ligaments
B. (i)-Ovaries, (ii)-oogonia, (iii)-follicles, (iv)-2-4 ( mathrm{cm},(mathrm{v})- ) muscles
C . (i)-Ovaries, (ii)-ovum, (iii)-hormones, (iv)-2-4 cm, (v)ligaments
D. (i)-Testes, (ii)-sperms, (iii)-testosterone, (iv)-8-9 ( mathrm{cm} )
75 By the fusion of male and female
gametes …………. is formed.
A . Zygote
B. Embryo
c. seed
D. Ovum
76 Which of the following shows the sex chromosomes in the body cells and in the sex cells in a female?
A. Body cells- ( x x ), sex cells-all ( x )
B. Body cells- XX, Sex cells- all XX
c. Body cells- XY, Sex cells- x or Y
D. Body cells- XY, Sex cells- all XY
77 In human beings sex is determined
A. At the time of fertilization of ovum
B. During 6th week of foetal life when androgens are produced
C . Before fertilization of ovum
D. During 7th and 8th weeks of foetal Life when gonads differentiate into testis and ovaries
78 Leathery egg are found in
A. Amphibia
B. Reptiles
c. Birds
D. Mammals
79 In Drosophila female has a pair of chromosomes
A. zz
B. xxx
c. ( Y Y )
D. zw
80 A family has five girls and no son. Probability of son as the 6th child will
A. 50%
B. 75%
c. Full
D. No chance
81 Read the following statements about
the given diagram carefully and state which of them are correct?
(i) A carries urine and sperms.
(ii) ( mathrm{B} ) secretes a fluid that helps in the lubrication of penis.
(iii) D produces testosterone but not
(iv) ( mathrm{C} ) stores sperms.
( A cdot ) (i) and (ii)
B. (ii) and (iii)
c. (ii) and (iv)
D. (i) and (iv)
82 Choose the odd one in the following. Sperm, implantation, fertilization, ovum, afterbirth 12
83 Cessation of menstrual cycle in a
woman is called
A. Lactation
B. Ovulation
c. Menopause
D. Parturition
84 Extrusion of second polar body from egg nucleus occurs
A. After entry of sperm but before fertilization
B. After fertilization
c. Before entry of sperm into ovum
D. simultaneously with first cleavage
85 How is the sex of the baby determined?
A. Sex chromosomes of mother
B. Sex chromosomes of father
C. ‘X’ chromosome of unfertilised egg
D. All 23 pairs of chromosomes
86 Assertion
The process of fusion of a sperm with an ovum is called fertilisation
Only one sperm can fertilise an ovum.
A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
c. Assertion is correct but Reason is incorrect
D. Both Assertion and Reason are incorrect
87 Differentiate between menarche and
88 Sex chromosomes of a female bird are
represented by
A. xo
в. ( x x )
c. ( x y )
D. zz
E. zw
89 Why does menstruation occur? 12
90 Choose the correct option.
A. Testis – posses ( 3-4 ) testicular lobule
B. Seminal vesicle – storage of sperm
c. vas deferens – help in sperm transfer
D. Prostate gland – secretes seminal fluid

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