Reproduction in Organisms Test

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Reproduction in Organisms Test - 30

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Weekly Quiz Competition

Question 1
1 / -0

Parthenogenesis occurs in which of the following animal?

A
Sheep

B
Sponges

C
Ant

D
Hydra

Solution

Parthenogenesis is a form of asexual reproduction where an egg develops into an offspring without being fertilized. Many insects like aphid, ant, bee, parasitic wasp reproduce parthenogenetically.
Question 2
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A sexual reproduction by fragmentation takes place in-

A
Amoeba

B
Yeast

C
Spirogyra

D
Moss
Question 3
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The fusion of male and female gametes which are similar in size, shape, structure and behaviour is termed as

A
Oogamous

B
Anisogamous

C
Conjugation

D
Isogamous

Solution

Oogamy is a form of anisogamy (heterogamy) in which the female gamete (e.g., egg cell) is significantly larger than the male gamete and is non-motile. The male gametes are typically highly motile spermatozoa competing for the fertilization of the immobile egg.
Anisogamous refers to a form of sexual reproduction involving the union or fusion of two dissimilar gametes.
Conjugation is the transfer of genetic material between bacterial cells by direct cell-to-cell contact or by a bridge-like connection between two cells.
Isogamous is a form of sexual reproduction that involves gametes of similar morphology (similar shape and size), differing in general only in allele expression in one or more mating-type regions.
Therefore, the correct answer is option D.
Question 4
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Gametes of similar morphology fuse in

A
Oogamy

B
Isogamy

C
Anisogamy

D
None of the above

Solution

Isogamy is a form of sexual reproduction that involves gametes of similar morphology. The gametes differ in their allele expression. As they look alike they cannot be classified as male and female gametes.
So, the correct answer is 'Isogamy'.
Question 5
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Bulb helps the vegetative reproduction in

A
Tomato

B
Potato

C
Rye

D
Onion

Solution

Bulb is a stem modification. It has reduced stem and fleshy storage leaves. Bulb is used for vegetative propagation in plants like onion. Tomato and Rye predominantly reproduce sexually. Potato has a fleshy stem or tuber, which can also propagate vegetatively.
So, the correct answer is option D.
Question 6
1 / -0

The general method of asexual reproduction, in Yeast is -

A
By spores

B
By budding

C
Binary fission

D
Gemma
Question 7
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Fusion of male and female gametes is termed as-

A
Reproduction

B
Vegetative propagation

C
Cell-division

D
Respiration.
Question 8
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Which of the following types of sexual reproduction is found in algae?

A
Isogamous only

B
Anisogamous only

C
Oogamous only

D
All of the above

Solution

Sexual reproduction is by three basic methods:
1. Isogamy,
2. Anisogamy,
3. Oogamy.
In isogamy, fusion occurs between two morphologically identical gametes. Anisogamy involves the pairing of two dissimilar gametes, i.e., one gamete is smaller than the other. In certain cases, the morphologically identical gametes behave differently, thus, exhibit the physiological anisogamy. In some algae, the gametes may be highly dimorphic. The larger, non-motile gamete is called as an egg or ovum and the smaller, motile one is called as the sperm or spermatozoid. A spermatozoid unites with an egg and this type of sexual reproduction is known as oogamy.
Thus, the correct answer is option D.
Question 9
1 / -0

Eggs of which one of these can develop parthenogenetically by chemicals?

A
Man

B
Frog

C
Sea urchin

D
All of the above

Solution

Artificial parthenogenesis can be induced in eggs of both frog and sea urchin but chemical (hypertonic sea water) induction occurs in sea urchin, whereas, frog eggs when pricked with a needle can undergo parthenogenesis. Thus, the correct answer is option C.
Question 10
1 / -0

Two of the above four figures that illustrate budding are

A
(i), (ii)

B
(ii), (iii)

C
(i), (iv)

D
(i), (iii)

Solution

Budding is a form of asexual reproduction in which a new organism develops from an outgrowth or bud due to cell division at one particular site. The new organism remains attached as it grows, separating from the parent organism only when it is mature, leaving behind scar tissue.

In the given picture yeast budding (i) and budding in hydra (iv) are shown.

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Reproduction in Organisms Test - 30

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Reproduction in Organisms Test - 30

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SHARING IS CARING

Question 1

Sheep

Sponges

Ant

Hydra

Solution

Question 2

Amoeba

Yeast

Spirogyra

Moss

Question 3

Oogamous

Anisogamous

Conjugation

Isogamous

Solution

Question 4

Oogamy

Isogamy

Anisogamy

None of the above

Solution

Question 5

Tomato

Potato

Rye

Onion

Solution

Question 6

By spores

By budding

Binary fission

Gemma

Question 7

Reproduction

Vegetative propagation

Cell-division

Respiration.

Question 8

Isogamous only

Anisogamous only

Oogamous only

All of the above

Solution

Question 9

Man

Frog

Sea urchin

All of the above

Solution

Question 10

(i), (ii)

(ii), (iii)

(i), (iv)

(i), (iii)

Solution

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