Human Reproduction Test

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Human Reproduction Test - 72

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Weekly Quiz Competition

Question 1
1 / -0

Brush bordered epithelium is found in ____________.

A
Fallopian tube

B
Small intestine

C
Stomach

D
Trachea
Question 2
1 / -0

Menstrual cycle is not seen in ____________.

A
Humans

B
Orangutans

C
Lemurs

D
Chimpanzees

Solution

From order primate, menstruation is present in the organisms of suborder catarrhines which include humans, apes, Old World monkeys, chimpanzees, and orangutans while organisms of suborder strepsirrhines (e.g. lemurs) do not menstruate. Apart from above-listed primates menstruation also occurs in elephants, shrews, and certain bats.
So the correct answer here is option C.
Question 3
1 / -0

Which part of the sperm provides energy for its movement?

A
Tail

B
Middle piece

C
Nucleus

D
Non of above
Question 4
1 / -0

The most important characteristic of living organisms is _____________.

A
Multiplication

B
Movements

C
Growth

D
Protoplasm
Question 5
1 / -0

Refer to the given showing levels of different hormones $$(P-S)$$ during menstrual cycle in a normal woman.
Identify the hormones $$P-S$$ and select the incorrect statement regarding them.

A
$$R$$ stimulates the ovarian follicles to produce estrogen during proliferative phase while $$Q$$ stimulates the corpus luteum of the ovary to secrete progesterone

B
Menstrual phase is caused by the reduction of $$P$$ and $$S$$

C
Proliferative phase is characterised by increased production of $$S$$ whereas secretory phase is charaterised by increased production of $$P$$

D
In males. $$Q$$ causes spermatogenesis whereas $$R$$ stimulates Leyding's cells to secrete testosterone
Question 6
1 / -0

When spermatogonia accumulates large amount of nutrient and chromatin material and increases in size, it is known as

A
Spermatids

B
Spermatogonium

C
Sperm

D
Primary spermatocytes

Solution

In testis, the immature male germ cells, spermatogonia produce sperms by a process called spermatogenesis that begins at puberty. It occurs in four stages. During the first step of spermatogenesis, i.e. spermatocytogenesis, the spermatogonia present on the inside wall of the seminiferous tubules multiply by mitotic division and increase in numbers. Each spermatogonia is diploid containing 46 chromosomes. When spermatogonia accumulates large amount of nutrient and chromatin material and increases in size, it is known as primary spermatocytes. It periodically undergo meiosis and others remain as spermatogonia cells.
Question 7
1 / -0

A thin layer of cytoplasm is found in middle piece of sperm is known as ____ ?

A
Fourchette

B
Nebenkern sheath

C
Acrosome

D
Manchette

Solution

In the middle piece of the sperm, there are many mitochondria present to provide energy to the sperm for movement. As the middle portion is completely filled with the mitochondria the cytoplasmic form a spiral sheath-like structure around mitochondria which is known as Nebenkern sheath.
Hence, the correct answer is 'Nebenkern sheath'
Question 8
1 / -0

The polar body is:

A
Another name for an egg cell

B
A precursor cell that becomes an egg cell

C
Nonfunctional cell rudiment made at the same time as an egg cell

D
The cell produced when fertilization occurs

Solution

A polar body is a small haploid cell that is formed concomitantly as an egg cell during oogenesis, but which generally does not have the ability to be fertilized. When certain diploid cells in animals undergo cytokinesis after meiosis to produce egg cells, they sometimes divide unevenly. Most of the cytoplasm is segregated into one daughter cell, which becomes the egg or ovum, while the smaller polar bodies only get a small amount of cytoplasm. They frequently die (apoptosis) and disappear, but in some cases, they remain and can be important in the life cycle of the organism.
So the correct option is 'nonfunctional cell rudiment made at the same time as an egg cell'.
Question 9
1 / -0

Which one of the following is formed during the process of spermatogenesis?

A
Sperms

B
Ova

C
Estrogen

D
Corpus luteum

Solution

Spermatogenesis is the process by which haploid spermatozoa develop from germ cells in the seminiferous tubules of the testis. Spermatogenesis is initiated in the male testis with the beginning of puberty. This comprises the entire development of the spermatogonia (former primordial germ cells) up to sperm cells. The gonadal cords that are solid up till then in the juvenile testis develop a lumen with the start of puberty
So, the correct answer is 'sperms'
Question 10
1 / -0

If the epididymis is removed from a person body then what will happen?

A
Early maturation of sperm

B
Late maturation of sperm

C
Sperm will be incapable for fertilisation

D
Life span of sperm will increase
Solution
- The vasa efferentia leave the testis and open into a narrow, tightly coiled tube called epididymis. The epididymis is located on the posterior surface of each testis.
- If the epididymis is removed from a person body then Sperm will be incapable of fertilization because epididymis provides storage space for the sperms and gives the sperms time to mature.
- When epididymitis is removed sperms cannot mature thus immature sperms is incapable of fertilization.
- So, the correct answer is 'Sperm will be incapable for fertilization'.

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Re-Attempt Weekly Quiz Competition

Human Reproduction Test - 72

Result

Human Reproduction Test - 72

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SHARING IS CARING

Question 1

Fallopian tube

Small intestine

Stomach

Trachea

Question 2

Humans

Orangutans

Lemurs

Chimpanzees

Solution

Question 3

Tail

Middle piece

Nucleus

Non of above

Question 4

Multiplication

Movements

Growth

Protoplasm

Question 5

$$R$$ stimulates the ovarian follicles to produce estrogen during proliferative phase while $$Q$$ stimulates the corpus luteum of the ovary to secrete progesterone

Menstrual phase is caused by the reduction of $$P$$ and $$S$$

Proliferative phase is characterised by increased production of $$S$$ whereas secretory phase is charaterised by increased production of $$P$$

In males. $$Q$$ causes spermatogenesis whereas $$R$$ stimulates Leyding's cells to secrete testosterone

Question 6

Spermatids

Spermatogonium

Sperm

Primary spermatocytes

Solution

Question 7

Fourchette

Nebenkern sheath

Acrosome

Manchette

Solution

Question 8

Another name for an egg cell

A precursor cell that becomes an egg cell

Nonfunctional cell rudiment made at the same time as an egg cell

The cell produced when fertilization occurs

Solution

Question 9

Sperms

Ova

Estrogen

Corpus luteum

Solution

Question 10

Early maturation of sperm

Late maturation of sperm

Sperm will be incapable for fertilisation

Life span of sperm will increase

Solution

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