Human Reproduction Test

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Human Reproduction Test - 60

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Weekly Quiz Competition

Question 1
1 / -0

Menopause occurs in females at the age of

A
$$55-60$$ years

B
$$50-55$$ years

C
$$45-50$$ years

D
$$37-42$$ years

Solution

The last menstrual cycle or cessation of the menstrual cycle in women at the age of $$45-50$$ years is known as menopause. It marks the end of reproductive life of women.
So the correct answer is C.
Question 2
1 / -0

In man, the sperms released from the testis take the following route to reach the urethra

A
Vasa efferentia, Bidder canal, uriniferous tubules and nephrostome

B
Vasa efferentia, epididymis, vas deferens and urethra

C
Vasa efferentia, Bidder's canal nephrostome

D
Vasa efferentia, collecting tubules and bidder canals

Solution

The testis is the primary sex organ in males. Each testis has 250 testicular lobules. Each lobule has 1-3 highly coiled seminiferous tubules. These seminiferous tubules open into the vasa efferentia through rete testis. The vasa efferentia opens into the epididymis which continues to form the vas deferens. Vas deferens transfers the sperms mixed with semen to the ejaculatory duct. The ejaculatory duct opens into the urethra.
So the correct answer is B.
Question 3
1 / -0

Which is the correct sequence in spermatogenesis?

A
Spermatogonia $$\rightarrow$$ Spermatids $$\rightarrow$$ Secondary spermatocytes $$\rightarrow$$ Primary spermatocytes $$\rightarrow$$ sperms

B
Spermatogonia $$\rightarrow$$ Spermatids $$\rightarrow$$ Primary spermatocytes $$\rightarrow$$ Secondary spermatocytes $$\rightarrow$$ Sperms

C
Primary spermatocytes $$\rightarrow$$ Secondary spermatocytes $$\rightarrow$$ Spermatids $$\rightarrow$$ Spermatogonia $$\rightarrow$$ Sperms

D
Spermatogonia $$\rightarrow$$ Primary spermatocytes $$\rightarrow$$ Secondary spermatocytes $$\rightarrow$$ Spermatids $$\rightarrow$$ Sperms

Solution

Spermatogenesis is the process of formation of spermatid(n) from spermatogonia$$(2n)$$. The process goes as follows:-
Spermatogonia$$(2n)\longrightarrow$$ Primary Spermatocyte$$(2n)\longrightarrow$$Secondary Spermatocyte$$(n)\longrightarrow$$ Spermatid$$(n)\longrightarrow$$ Sperms$$(n)$$
Spermiogenesis is the metamorphosis of spermatid into sperm.
So the correct answer is D.
Question 4
1 / -0

How many sperms are formed from a secondary spermatocyte?

A
$$4$$

B
$$8$$

C
$$2$$

D
$$1$$
Solution
Correct Option: C

Explanation:
- The spermatogonia are diploid and have 46 chromosomes.
- A primary spermatocyte completes the first meiotic division to form two equal, haploid cells called secondary spermatocytes, containing 23 chromosomes each.
- The secondary spermatocytes undergo meiosis II to produce four equal, haploid spermatids which, in turn, produce 4 sperms.
Hence, 2 sperms are formed from the secondary spermatocyte.
Question 5
1 / -0

Meroblastic cleavage takes place in

A
Hydra

B
Amphioxus

C
Frog

D
Chick

Solution

The cleavage remains limited in eggs of Birds, Reptiles and egg-laying mammals, to the disc-shaped area of cytoplasm, the blastodisc. The animal pole yolk is not divided. Such incomplete cleavage is known as discoidal cleavage. Discoidal cleavage is the part of meroblastic cleavage.
So the correct answer is 'Chick',
Question 6
1 / -0

Meroblastic cleavage is ......... division

A
Horizontal

B
Partial/parietal

C
Total

D
Spiral

Solution

In organisms that produce eggs with little yolk, the zygote divides by holoblastic cleavage. In such cleavages, the entire cells is divided equally.
Eggs cells that have larger quantities of yolk undergo meroblastic cleavage after fertilization, in which only a portion of the zygote undergoes cleavage.
So, the correct answer is 'Partial/parietal'
Question 7
1 / -0

The superficial blastula is the characteristic of

A
Birds

B
Reptiles

C
Insects

D
Annelids

Solution

Periblastula is formed as a result of superficial cleavage in which the blastocoel is absent. There is a single layer of blastomeres around the uncleaved yolky part. It is the characteristic of insects.
So, the correct option is 'Insects'.
Question 8
1 / -0

What are the diploid stages in gametogenesis?

A
Spermatogonia and spermatia

B
Spermatogonia and primary spermatocytes

C
Spermatogonia and sperm

D
Primary spermatocytes and secondary spermatocytes

Solution

Spermatogenesis is the process of formation of spermatid(n) from spermatogonia$$(2n)$$. The process goes as follows:-
Spermatogonia$$(2n)\longrightarrow$$ Primary Spermatocyte$$(2n)\longrightarrow2$$ Secondary Spermatocyte$$(n)\longrightarrow4$$ Spermatid$$(n)\longrightarrow4$$ Sperms$$(n)$$
The only diploid stages are the spermatogonia and primary spermatocytes.
So the correct answer is B.
Question 9
1 / -0

How many sperms are produced from one primary spermatocyte?

A
$$8$$

B
$$6$$

C
$$2$$

D
$$4$$

Solution

Spermatogenesis is the process of formation of spermatid(n) from spermatogonia$$(2n)$$. The process goes as follows:-
Spermatogonia$$(2n)\longrightarrow$$ Primary Spermatocyte$$(2n)\longrightarrow$$ Secondary Spermatocyte$$(n)\longrightarrow4$$ Spermatid$$(n)\longrightarrow4$$ Sperms
So the correct answer is D.
Question 10
1 / -0

Human embryo completes development in

A
180 days

B
300 days

C
250 days

D
280 days

Solution

The gestation period is the time period of pregnancy or the time taken by embryo for complete development. It is approximately 9 months in humans i.e., around 280 days.

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Human Reproduction Test - 60

Result

Human Reproduction Test - 60

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SHARING IS CARING

Question 1

$$55-60$$ years

$$50-55$$ years

$$45-50$$ years

$$37-42$$ years

Solution

Question 2

Vasa efferentia, Bidder canal, uriniferous tubules and nephrostome

Vasa efferentia, epididymis, vas deferens and urethra

Vasa efferentia, Bidder's canal nephrostome

Vasa efferentia, collecting tubules and bidder canals

Solution

Question 3

Spermatogonia $$\rightarrow$$ Spermatids $$\rightarrow$$ Secondary spermatocytes $$\rightarrow$$ Primary spermatocytes $$\rightarrow$$ sperms

Spermatogonia $$\rightarrow$$ Spermatids $$\rightarrow$$ Primary spermatocytes $$\rightarrow$$ Secondary spermatocytes $$\rightarrow$$ Sperms

Primary spermatocytes $$\rightarrow$$ Secondary spermatocytes $$\rightarrow$$ Spermatids $$\rightarrow$$ Spermatogonia $$\rightarrow$$ Sperms

Spermatogonia $$\rightarrow$$ Primary spermatocytes $$\rightarrow$$ Secondary spermatocytes $$\rightarrow$$ Spermatids $$\rightarrow$$ Sperms

Solution

Question 4

$$4$$

$$8$$

$$2$$

$$1$$

Solution

Question 5

Hydra

Amphioxus

Frog

Chick

Solution

Question 6

Horizontal

Partial/parietal

Total

Spiral

Solution

Question 7

Birds

Reptiles

Insects

Annelids

Solution

Question 8

Spermatogonia and spermatia

Spermatogonia and primary spermatocytes

Spermatogonia and sperm

Primary spermatocytes and secondary spermatocytes

Solution

Question 9

$$8$$

$$6$$

$$2$$

$$4$$

Solution

Question 10

180 days

300 days

250 days

280 days

Solution

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