Human Reproduction Test

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Human Reproduction Test - 75

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Weekly Quiz Competition

Question 1
1 / -0

Which one of the following events is correctly matched with the time period in a normal menstrual cycle?

A
Release of egg: 50$$^{th}$$ day

B
Endometrium regenerates: 5-10 days

C
Endometrium secretes nutrients for implantation: 11.18 days

D
Rise in progesterone level: 1-15 days
Solution
Correct Option: B
Explanation:
The regeneration of the endometrium takes place from the 5th to the 10th day of the menstrual cycle.
Release of egg or ovulation takes place on the 14th day of the menstrual cycle and it is called the proliferative phase.
The endometrium doesn't secrete any nutrients for implantation.
There is a rise in oestrogen level from 1 to 15 days of the menstrual cycle, not progesterone.
Hence, Endometrium regenerates: 5-10 days, is correctly matched with the time period in a normal menstrual cycle.
Question 2
1 / -0

Identify the parts labelled as A, B, C, and E in the given diagram of a human sperm and select the correct option.

A
A-Nucleus, B-Tail, C-Mitochondria, D-Acrosome, E-Centriole

B
A-Acrosome, B-Nucleus, C-Centriole, D-Mitochondria, E-Plasma membrane

C
A-Nudeus, B-Mitochondria, C-Plasma membrane, D-Centriole, E-Neck

D
A-Acrosome, B-Centriole, C-Mitochondria, D-Plasma membrane, E-Tail

Solution

The sperm has an outermost covering as the plasma membrane followed by a cap-like structure called acrosome that covers the anterior part of the sperm head which contains enzymes for the fertilization of the ovum. The neck consists of centriole and the middle piece has numerous mitochondria which produce energy to facilitate movement of the sperm.
So, the correct option is 'A-Acrosome, B-Nucleus, C-Centriole, D-Mitochondria, E-Plasma membrane'.
Question 3
1 / -0

Spermatogenesis is induced by ____________.

A
FSH

B
ICSH

C
STH

D
ATH

Solution

FSH acts on the Sertoli cells and stimulate secretion of some factors which help in the process of spermatogenesis.
Question 4
1 / -0

Match column I with column II and select the correct option from the codes given below.
Column I Column II
A. Acrosome (i) Rudimentary erectile tissue
B. Endometrium (ii) Uterus
C. Polar body (iii) Oogenesis
D. Clitoris (iv) Spermatozoan

A
A - (ii), B - (i), C - (iv), D - (iii)

B
A - (vi), B - (ii), C - (iii), D - (i)

C
A - (iv), B - (iii), C - (ii), D - (i)

D
A - (iv), B - (iii), C - (i), D - (ii)

Solution

The acrosome is a part of the head of the spermatozoa in the anterior region and has enzymes for the penetration into the ovum. Endometrium lines the uterus and is the inner epithelial layer, along with its mucous membrane, of the mammalian uterus. When the primary oocyte divides meiotically it gives rise to the secondary oocyte and an unequal polar body that is haploid but cannot be fertilized. Clitoris refers to a structure about the size of a pea located at the top of a woman's vulva, above the urethral opening and is a rudimentary erectile tissue or a small nub like structure.
So, the correct option is ' A - (vi), B - (ii), C - (iii), D - (i)'.
Question 5
1 / -0

The sperms undergo physiological maturation, acquiring increased motility and fertilising capacity in _____________.

A
Seminiferous tubules

B
Vasa efferentia

C
Epididymis

D
Vagina

Solution

In the head of the epididymis, the sperms undergo physiological maturation, acquiring increased motility and fertilising capacity.
Question 6
1 / -0

The time for optimum chances of conception in a woman is __________ starting from the day of menstruation.

A
$$1^{st}$$ day

B
$$4^{th}$$ day

C
$$14^{th}$$ day

D
$$26^{th}$$ day

Solution

The optimum chances of conception in a woman is 14$$^{th}$$ day starting from the day of menstruation as the egg or the ovum is released by a group of mature cells the Grafian follicle during this period under the effect of estrogen, after the release of the egg/ovum the follicle gets converted to Corpus leuteum and releases progestrone to build the endometrium layer to anchor the embryo if fertilization takes place.
So, the correct answer is '14$$^{th}$$ day
Question 7
1 / -0

Repair of endometrium is undertaken by _________.

A
LH

B
FSH

C
Estrogen

D
Prolactin

Solution

Estrogen secreted from ovarian follicles under the influence of FSH causes the proliferation of the endometrium of the uterine wall.
So, The correct answer is C.
Question 8
1 / -0

A cross section at the midpoint of the middle piece of a human sperm will show ______________________.

A
Centriole, mitochondria and 9 + 2 arrangement of microtubules

B
Centriole and mitochondria

C
Mitochondria and 9 + 2 arrangement of microtubules

D
9 +2 Arrangement of microtubules only.

Solution

The middle piece of human sperm contains mitochondria coiled around axial bundle of microtubules. The microtubules are in 9 + 2 arrangement.
Question 9
1 / -0

The main function of trophoectoderm in mammalian embryo is ______________.

A
Formation of future endoderm

B
Formation of the body of developing embryo

C
Formation of future ectoderm

D
Formation of placenta

Solution

During embryonic development, the blastocyst formed consists of an outer envelope of cells called the trophoblast and the inner cell mass. The cells of trophoblast form chorion and amnion and hence part of placenta.

Question 10

1 / -0

Identify the correctly matched pair/pairs of the germ layers and their derivatives.

A. Ectoderm - Epidermis
B. Endoderm - Dermis
C. Mesoderm - Muscles
D. Mesoderm - Notochord
E. Endoderm - Enamel of teeth

A and D

A and B

A, C and D

A, B, C and E

Solution

Germ layer		Derivatives
Ectoderm	-	Epidermis, posterior pituitary gland, cornea, enamel of teeth, etc.
Mesoderm	-	Dermis, muscles, kidney, notochord, etc.
Endoderm	-	Epithelium of mouth, gall bladder, liver, etc.

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Re-Attempt Weekly Quiz Competition

	Column I		Column II
A.	Acrosome	(i)	Rudimentary erectile tissue
B.	Endometrium	(ii)	Uterus
C.	Polar body	(iii)	Oogenesis
D.	Clitoris	(iv)	Spermatozoan

Human Reproduction Test - 75

Result

Human Reproduction Test - 75

Score

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Rank

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SHARING IS CARING

Question 1

Release of egg: 50$$^{th}$$ day

Endometrium regenerates: 5-10 days

Endometrium secretes nutrients for implantation: 11.18 days

Rise in progesterone level: 1-15 days

Solution

Question 2

A-Nucleus, B-Tail, C-Mitochondria, D-Acrosome, E-Centriole

A-Acrosome, B-Nucleus, C-Centriole, D-Mitochondria, E-Plasma membrane

A-Nudeus, B-Mitochondria, C-Plasma membrane, D-Centriole, E-Neck

A-Acrosome, B-Centriole, C-Mitochondria, D-Plasma membrane, E-Tail

Solution

Question 3

FSH

ICSH

STH

ATH

Solution

Question 4

A - (ii), B - (i), C - (iv), D - (iii)

A - (vi), B - (ii), C - (iii), D - (i)

A - (iv), B - (iii), C - (ii), D - (i)

A - (iv), B - (iii), C - (i), D - (ii)

Solution

Question 5

Seminiferous tubules

Vasa efferentia

Epididymis

Vagina

Solution

Question 6

$$1^{st}$$ day

$$4^{th}$$ day

$$14^{th}$$ day

$$26^{th}$$ day

Solution

Question 7

LH

FSH

Estrogen

Prolactin

Solution

Question 8

Centriole, mitochondria and 9 + 2 arrangement of microtubules

Centriole and mitochondria

Mitochondria and 9 + 2 arrangement of microtubules

9 +2 Arrangement of microtubules only.

Solution

Question 9

Formation of future endoderm

Formation of the body of developing embryo

Formation of future ectoderm

Formation of placenta

Solution

Question 10

A and D

A and B

A, C and D

A, B, C and E

Solution

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