Human Reproduction Questions

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Human Reproduction Questions

List of human reproduction Questions

Question NoQuestionsClass
1How is human male represented?
A. ( x x )
B. xo
c. ( x y )
D. YY
12
2Study 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
12
3Identify 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
12
4In 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
12
5Menstruation is due to sudden
A. Reduction of FSH
B. Increase of LH
C. Reduction in estrogen and progesteron
D. None of the above
12
6If fertilization doesn’t occur, the ovum is
released out of
A. Urine
B. Menstrual cycle
c. Sweat
D. None of the above
12
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.
12
8Give one significant difference between
puberty and menarche.
12
9Heterogamety or formation of two types of gametes is found in.
A. Male Drosophila
B. Female bird
c. Female Drosophila
D. Both A and B
12
10The 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
12
11In our society the women are often
blamed for giving birth to daughters. Can you explain why this is not correct?
12
12Theory of heterogamesis for sex determination was proposed by.
A. Morgan
B. Darwin
c. correns
D. Bridges
12
13The only haploid stage in an animal life cycle is the
A. zoospores
B. Spores
c. Gametes
D. None of the above
12
14How is sex determined in humans??12
15Fertilization occurs in human, rabbit
and other placental mammals in
A. Ovary
B. Uterus
c. Fallopian tubes
D. vagina
12
16Explain how equal genetic contribution
of male and female parents is ensured
in the progeny.
12
17A woman can give birth to how many
children in her lifetime?
12
18Puberty occurs in females at the age of
A . ( 8-10 ) years
B. 11- 14 years
c. ( 15-17 ) years
D. 18 – 20 years
12
19Write about Female Reproductive
System.
12
20Match 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) )
12
21Short / Long Answer question Type :
Write short notes on Menarche
12
22Given 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
12
23Which 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
12
24Role of chromosomes in sex
determination was proposed by
A. Sutton and Boveri
B. Henking
c. Mc clung
D. Morgan
12
25The 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
12
26What is menstruation? Why does it
occur?
12
27In 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
12
28In human sex determination, the key factor is
A. Y chromosome
B. X chromosome
c. Both A and B
D. None of the above
12
29The presence or absence of hymen is not reliable indicator of virginity or sexual experience.
A. True
B. False
12
30Observe 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
12
31Withdrawal of which of the following
hormones is the immediate cause of
menstruation?
A. Estrogen
B. FSH
c. FSH-RH
D. Progesterone
12
32Which 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
occur?
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

12
33Plant in which chromosomal basis of
sex determination was discovered first
is?
A. Rumex
B. Melandrium
c. coccinia
D. Sphaerocarpus
12
34First menstrual cycle is
A. Parturition
B. Menopause
c. Menarche
D. Implantation
12
35Which of the following is a correct
match?
A. Centrolecithal egg – insect
B. Megalecithal egg – eutherian mammals
C. Microlecithal egg – reptiles
D. Alecithal egg – birds
12
36On 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
12
37What 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.
12
38dentify the process.
A. Replication
B. Fertilisation
c. Binary fission
D. Budding
12
39The 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
12
40Give appropriate terms for the onset of
reproduction phase in a female.
12
41Write short note on sex determination
in humans.
12
42Differentiate between ( ^{prime} Z Z^{prime} ) and ( ^{prime} X Y^{prime} )
type of sex-determination mechanisms.
12
43If an egg is not fertilised,it is expelled from the body during12
44Give reason for these type of disorder.
What dife beara degensiation of What and ovaries etcrint their growing period
12
45Given are some organisms.
(I) Fowl
(II) Humans (III) Grasshopper Following alphabets related to the given
animals.
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
12
46Very short answer type:
What is double fertilization?
12
47How is sex determined in human
beings?
12
48X0 type of sex determination is seen in
A. Man
B. Grasshopper
c. Drosophila
D. Birds
E. Horses
12
49Give the names of four reproductive events that occur after puberty in human beings.12
50Differentiate between male and female
heterogamety.
12
51Explain the sex determination in baby?12
52What is formed immediately after
fertilisation?
A. Placenta
B. Foetus
c. Embry
D. zygote
12
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
12
54When was the first test tube baby born?
A. 2 January 1981
B. 25 July 1978
c. 3 August 1975
D. 4 February 1982
12
55Spot 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
12
56Estrous cycle is characteristic of
A. Human females
B. Mammalian females
C. Mammalian females other than primates
D. Mammals
12
57Explain how sex is determined in human babies.12
58Which of the following processes leads to formation of germ layers?
A. Embryogenesis
B. Gastrulation
c. Fertilization
D. None of the above
12
59Which one is found in males only?
A. X-chromosome
B. Y-chromosome
c. ( 2 x ) -chromosomes
D. ( x+x ) -chromosomes
12
60What is menopause and menarche?12
61The 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
12
62Define fertilization and write the list of
events occuring in human fertilization.
12
63If a couple has two boys and one girl, the probability of the next girl child to be born is
A ( cdot frac{1}{4} )
B.
( c cdot frac{1}{2} )
D. ( frac{2}{3} )
E.
12
64Egg laid after fertilization is diploid.
A. True
B. False
12
65Write the function of Female
Reproductive system
12
66In Drosophila the XXY constitution determines
A. Maleness
B. Femaleness
c. Intersex
D. Both A and C
12
67Give a short description for
homogametes and heterogametes with example.
12
68Genetic identity of human male is known by
A. Nucleolus
B. Cell organelles
c. Autosomes
D. sex chromosomes
12
69Mrs. 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 % )
12
70Sexually transmitted diseases can be prevented by using condoms.
A. True
B. False
12
71Explain sex determination in human beings.12
72Male 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
12
73After 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
12
74Fill up the blanks in the following paragraph by selecting the correct
option.
(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} )
(v)-muscles
12
75By the fusion of male and female
gametes …………. is formed.
A . Zygote
B. Embryo
c. seed
D. Ovum
12
76Which 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
12
77In 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
12
78Leathery egg are found in
A. Amphibia
B. Reptiles
c. Birds
D. Mammals
12
79In Drosophila female has a pair of chromosomes
A. zz
B. xxx
c. ( Y Y )
D. zw
12
80A family has five girls and no son. Probability of son as the 6th child will
be
A. 50%
B. 75%
c. Full
D. No chance
12
81Read 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
sperms
(iv) ( mathrm{C} ) stores sperms.
( A cdot ) (i) and (ii)
B. (ii) and (iii)
c. (ii) and (iv)
D. (i) and (iv)
12
82Choose the odd one in the following. Sperm, implantation, fertilization, ovum, afterbirth12
83Cessation of menstrual cycle in a
woman is called
A. Lactation
B. Ovulation
c. Menopause
D. Parturition
12
84Extrusion 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
12
85How 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
12
86Assertion
The process of fusion of a sperm with an ovum is called fertilisation
Reason
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
12
87Differentiate between menarche and
menopause.
12
88Sex chromosomes of a female bird are
represented by
A. xo
в. ( x x )
c. ( x y )
D. zz
E. zw
12
89Why does menstruation occur?12
90Choose 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
12

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