Reproduction Test

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Reproduction Test - 5

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Weekly Quiz Competition

Question 1
1 / -0

In which part of the human penis are the proteolytic enzymes are located?

A
Foreskin

B
Head

C
Acrosome

D
Corona

E
Cumulus

Solution

The acrosome is the part of the sperm containing proteolytic enzymes to digest the zona pellucida. It is exposed by the process of capacitation. Then, under the influence of substances released by corona radiata cells, it releases its proteolytic enzymes and penetrates the oocyte.
Question 2
1 / -0

In a female, the nerve endings for sensing sexual pleasure are located in which of the following?

A
Fallopian tubes

B
Mons pubis

C
Clitoris

D
Labia majora

E
Labia minora

Solution

On the superior end of the labia minora is a small mass of erectile tissue known as the clitoris that contains many nerve endings for sensing sexual pleasure.
Question 3
1 / -0

A fruit is a mature ovary of a flowering plant that is edible and usually eaten raw. Which is the following statements does NOT characterise the fruit development in angiosperms?

A
Each microsporangium contains diploid microspore mother cells.

B
Within the megagametophyte both the two sperm unites with the egg, forming a zygote.

C
After pollination, a tube grows from the pollen through the stigma into the ovary.

D
The zygote gives rise to the endosperm.

E
The pericarp is often differentiated into two or three distinct layers.

Solution

Within the megagametophyte one of the two sperm unites with the egg, forming a zygote, and the second sperm enters the central cell forming the endosperm mother cell, which completes the double fertilisation process.
Question 4
1 / -0

Pollen is a powder made of pollen grains, which produces sperm cells of seed plants. Which of the following statements regarding the pollen production in angiosperms is INCORRECT?

A
Pollen of angiosperms must be transported to the stigma of a compatible flower.

B
The pollen is eventually released when the anther forms openings.

C
Each microspore divides mitotically to form an immature microgametophyte.

D
The microsporangia form sacs or pockets (locules) in the anther.

E
Each microsporangium contains haploid pollen mother cells.

Solution

Each microsporangium is lined with a nutritive tissue layer called the tapetum and initially contains diploid pollen mother cells.
Question 5
1 / -0

Which of the following regarding the main adaptations of nonvascular plants is INCORRECT?

A
They reproduce both asexually and sexually.

B
The rate of evaporation is slow.

C
The sporophyte grows as a parasite on the gametophyte.

D
The non-vascular plant usually grows in dry places.

E
These plants possess rhizoids.

Solution

The non-vascular plant usually grows in the moist and shady places. The moist environment is essential for easy uptake of the water, since they lack the vascular tissues like the xylem and the phloem.
Question 6
1 / -0

During the early development of a vascular plant, i.e., before starting the process of photosynthesis the essential nutrients are provided by ____________.

A
locules

B
Strobilus

C
Calyptra

D
Integuments

E
Cotyledons

Solution

Two large green hemispherical structures which enclose the embryonic axis is called as the cotyledons. The cotyledons may be one or two in number depending on the type of plant. The cotyledons are important because it give nutrients during the early development of the plant before starting the process of photosynthesis.
Question 7
1 / -0

Bamboos are not trees and their stems do not get thicker with age, and if left unchecked they will form whole forests of plants. They generally propagate through which of the following?

A
Crown

B
Tubers

C
Rhizomes

D
Bulbs

E
Offshoots

Solution

Offshoots applies to lateral branches on stems of monocots. Date palm, pineapple, banana, and orchids produce offshoots. Bamboo also propagate from offshoots, if left unchecked they will form whole forests of plants.
Question 8
1 / -0

Which of the following male accessory glands is responsible for enhancing the movement of spermatozoa in all the mammals?

A
Prostate Gland

B
Ampullary Glands

C
Vesicular Glands

D
Bulbourethral Glands

E
Urethral Glands

Solution

The secretion of this gland is more serous in dogs and more mucous in bulls. It serves to promote the movement of spermatozoa in all the mammals and to form a vaginal plug.
Question 9
1 / -0

Vegetative propagation is usually considered as a cloning method. Strawberries are typically propagated asexually by __________.

A
the runners

B
offset

C
stolon

D
sucker

E
cladophyll

Solution

Runners are horizontally oriented stems that grow along the soil surface. Their function is vegetative production. For example: number of grasses have stolons. Strawberries are normally propagated asexually by two different methods: runners (stolons) and crown division.
Question 10
1 / -0

Which of the following cells of epididymis are regarded as the undifferentiated precursors of principal cells in human males?

A
Main cells

B
Basal cells

C
Apical cells

D
Stereocilia

E
Paradidymis

Solution

Basal cells are the shorter, pyramid-shaped cells which contact the basal lamina but taper off before their apical surfaces reach the lumen.These are thought to be undifferentiated precursors of principal cells.
Question 11
1 / -0

In a human male, which of the following is known as the visible ridge between the lateral halves of the penis?

A
Corpus cavernosum

B
Corpus spongiosum

C
Radix

D
Raphe

E
Epithelium

Solution

The raphe is the visible ridge between the lateral halves of the penis, found on the ventral or underside of the penis, running from the meatus (opening of the urethra) across the scrotum to the perineum (area between scrotum and anus).
Question 12
1 / -0

Which of the following stem modification is essentially meant for reproduction in plants?

A
Tendrils

B
Thorns

C
Bulbil

D
Phylloclade

E
Cladodes

Solution

Bulbil is a speical multicellular body essentially meant for reproduction. In Agave the floral buds are modified into bulbils. These bulbils get detached, come in contact with the soil and develop into new plants. In Dioscorea the axillary bud develops into a bulbil. This bulbil detaches from the mother plant and grows up into a new independent one.
Question 13
1 / -0

In females the placenta originates from

A
decidua

B
myoblast cells

C
stromal cells

D
inner cell mass of the blastocyst

E
trophectoderm

Solution

The developing embryo has two main populations of cells: an inner cell mass and a trophectoderm. The trophectoderm cells lie at the outer surface of the developing embryo and will become the placenta.
Question 14
1 / -0

In which of the following parts of the fallopian tubes the process of fertilisation takes place?

A
Isthmus

B
Ampulla

C
Infundibulum

D
Fimbria

E
Ostium

Solution

The ampulla is the second portion of the fallopian tube. It is an intermediate dilated portion, which curves over the ovary. It is the most common site of mouse and human fertilisation.
Question 15
1 / -0

Which of the following statements regarding the cells present in the testis of mammals is CORRECT?

A
Sertoli cells line the seminiferous tubules and boost the developing sperm in males.

B
Leydig cells provides nutrition to the spermatozoas.

C
Sertoli cells reciprocate to testosterone by synthesising androgen binding protein.

D
Leydig cells secrete testosterone.

E
Sertoli cells allows the unrestrained diffusion of water-soluble substances between the seminiferous tubules and the blood.

Solution

As a consequence of stimulation with luteinising hormone the interstitial cells (Leydig) secrete testosterone into the intertubular tissue, where it is absorbed by blood vessels, lymphatics, and the seminiferous tubules.
Question 16
1 / -0

What is the serous covering of the testis?

A
Tunica vaginalis

B
Tunica albuginea

C
Tunica vasculosa

D
Symphysis pubis

E
Membranous portion

Solution

The tunica vaginalis is the serous covering of the testis. It is a pouch of serous membrane, derived from the processus vaginalis of the peritoneum, which in the fetus preceded the descent of the testis from the abdomen into the scrotum.
Question 17
1 / -0

Which of the following helps in determining the sex of the offspring in mammals?

A
Spermatogonium

B
Secondary spermatocytes

C
Primary spermatocytes

D
Spermatids

E
Spermatozoon

Solution

A spermatozoon is a motile sperm cell, or moving form of the haploid cell that is the male gamete. A spermatozoon joins an ovum to form a zygote. In mammals, the sex of the offspring is determined by the sperm cell: a spermatozoon bearing a Y chromosome will lead to a male (XY) offspring, while one bearing an X chromosome will lead to a female (XX) offspring.
Question 18
1 / -0

Who discovered sperm cells?

A
William Harvey

B
Antonie van Leeuwenhoek

C
Nicolaas Hartsoeker

D
Pierre Fauchard

E
Herman Boerhaave

Solution

Antonie Philips van Leeuwenhoek is commonly known as the Father of Microbiology. Sperm cells were first observed by him.
Question 19
1 / -0

Which of the following statements regarding the sertoli cells is INCORRECT?

A
The sertoli cells consume the unneeded portions of the spermatozoa.

B
Sertoli cells form the blood-testis barrier.

C
Sertoli cells are also knownas the mother cell.

D
Sertoli cells helps in the translocation of germ cells.

E
Sertoli cells are activated by testosterone.

Solution

Sertoli cells are activated by follicle-stimulating hormone and has FSH-receptor on its membranes. It is specifically located in the convoluted seminiferous tubules
Question 20
1 / -0

Which of the following arteries supplies the blood to the penis?

A
Superior mesenteric artery

B
Genitofemoral artery

C
Pampiniform plexus

D
Internal pudendal arteries

E
Uterine artery

Solution

The internal pudendal arteries serve as the penile blood supply by entering the penis dorsally and running deep into the tissues of the corpora cavernosa. The internal pudendal artery becomes the penile artery.

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Reproduction Test - 5

Result

Reproduction Test - 5

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SHARING IS CARING

Question 1

Foreskin

Head

Acrosome

Corona

Cumulus

Solution

Question 2

Fallopian tubes

Mons pubis

Clitoris

Labia majora

Labia minora

Solution

Question 3

Each microsporangium contains diploid microspore mother cells.

Within the megagametophyte both the two sperm unites with the egg, forming a zygote.

After pollination, a tube grows from the pollen through the stigma into the ovary.

The zygote gives rise to the endosperm.

The pericarp is often differentiated into two or three distinct layers.

Solution

Question 4

Pollen of angiosperms must be transported to the stigma of a compatible flower.

The pollen is eventually released when the anther forms openings.

Each microspore divides mitotically to form an immature microgametophyte.

The microsporangia form sacs or pockets (locules) in the anther.

Each microsporangium contains haploid pollen mother cells.

Solution

Question 5

They reproduce both asexually and sexually.

The rate of evaporation is slow.

The sporophyte grows as a parasite on the gametophyte.

The non-vascular plant usually grows in dry places.

These plants possess rhizoids.

Solution

Question 6

locules

Strobilus

Calyptra

Integuments

Cotyledons

Solution

Question 7

Crown

Tubers

Rhizomes

Bulbs

Offshoots

Solution

Question 8

Prostate Gland

Ampullary Glands

Vesicular Glands

Bulbourethral Glands

Urethral Glands

Solution

Question 9

the runners

offset

stolon

sucker

cladophyll

Solution

Question 10

Main cells

Basal cells

Apical cells

Stereocilia

Paradidymis

Solution

Question 11

Corpus cavernosum