How do Organisms Reproduce Test

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How do Organisms Reproduce Test - 30

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Question 1
1 / -0

The body breaks up into several fragments and each fragment starts to live as a new individual. This type of asexual reproduction is called:

A
Budding

B
Fragmentation

C
Regeneration

D
Binary fission

Solution

Fragmentation is a mode of vegetative reproduction seen in some organisms. In this form of reproduction, the parent body divides into fragments and each fragment is capable of forming a new organism. (Example - Spirogyra, Riccia, etc.)
So, the correct option is B.
Question 2
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Vegetative reproduction by layering can be done in:

A
Jasmine

B
Mango

C
Rose

D
All of the above

Solution

Layering is a type of vegetative reproduction. It is a method of propagation of plants from pegged down the soft basal branch in the soil. It involves first rooting then cutting. Vegetative reproduction by layering could be done in jasmine
Thus, the correct answer is option A.
Question 3
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________ produce sperm cells.

A
Seminal vesicle

B
Urinary bladder

C
Testes

D
Prostate gland

Solution

The testes are responsible for making testosterone, the primary male sex hormone, and for producing sperm. Within the testes are coiled masses of tubes called seminiferous tubules. These tubules are responsible for producing the sperm cells through a process called spermatogenesis.
Thus, option C is correct.
Question 4
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Spore formation is the most common asexual method of reproduction in:

A
Protozoa

B
Tubers

C
Fungi

D
Algae

Solution

In both sexual and asexual reproduction, fungi reproduce by spore formation. Spores are dispersed from the parent by either wind or animals. On getting a suitable substratum, these spores grow and form new individuals.
Question 5
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Although organisms die, their kind continues to live on Earth. Which characteristic of living organisms makes this possible?

A
Respiration

B
Reproduction

C
Excretion

D
Movement

Solution

All living organisms reproduce during the reproductive stage of their life. They give rise to young ones of their type. Hence, their type continues even if the organisms die.
So, the correct answer is 'Reproduction'
Question 6
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Which of the following statements are true for flowers?
(i) Flowers are always bisexual.
(ii) They are the sexual reproductive organs.
(iii) They are produced in all groups of plants.
(iv) After fertilization they give rise to fruits.

A
(i) and (iv)

B
(ii) and (iii)

C
(i) and (iii)

D
(ii) and (iv)

Solution

Flowers are structures of sexual reproduction. A typical flower consists of four whorls: the calyx, corolla, androecium (male reproductive structure), and gynoecium (female reproductive structure). A flower with both reproductive organs is called a bisexual flower.
All flowers are not bisexual. For example, the papaya flower has male and female reproductive organs in separate flowers. After fertilization, calyx, corolla, and androecium wither off, the ovary (part of the carpel) forms the fruit that contains the seeds.
So, the correct answer is '(ii) and (iv).'
Question 7
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Which one of the following is not associated with reproduction?

A
A new leaf coming out of a tree branch.

B
A dog giving birth to puppy.

C
A seed growing into a plant.

D
Chick hatching from an egg.

Solution

A new leaf coming out of the branch is growth and not reproduction as it does not give rise to a new plant but is a part of the plant.
So, the correct answer is 'A new leaf coming out of a tree branch.'
Question 8
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Choose the odd one out from below with respect to reproduction.

A
Eggs of hen

B
Seeds of plants

C
Buds of potato

D
Roots of mango tree

Solution

Buds of potato produces new potato plant. It is type of vegetative reproduction. Seeds of a plant, reproduces the same type of plant. Eggs of a hen on hatching produce chicken.
Roots of Mango tree do not produce a new Mango plant by themselves.
So, the correct answer is 'Roots of mango tree'
Question 9
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Lila observed that a pond with clear water was covered up with green algae within a week. By which method of reproduction did the algae spread so rapidly?

A
Budding

B
Sexual reproduction

C
Fragmentation

D
Pollination
Solution
- Fragmentation is a kind of 'vegetative reproduction', which occurs in certain green algae like Spirogyra.
- In this process, the organism splits into two or more than two fragments.
- Each fragment grows into new individuals.
- The process occurs at a very fast pace.
Thus, the correct answer is option (c),
Question 10
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Pollination refers to the:

A
Transfer of pollen from anther to ovary.

B
Transfer of female gametes from anther to stigma.

C
Transfer of pollen from anther to stigma.

D
Transfer of pollen from anther to ovule.

Solution

Pollination is the transfer of pollen grains from the anther of one flower to the stigma of the same or another flower of the same species.
Thus, the correct answer is option C.

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How do Organisms Reproduce Test - 30

Result

How do Organisms Reproduce Test - 30

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SHARING IS CARING

Question 1

Budding

Fragmentation

Regeneration

Binary fission

Solution

Question 2

Jasmine

Mango

Rose

All of the above

Solution

Question 3

Seminal vesicle

Urinary bladder

Testes

Prostate gland

Solution

Question 4

Protozoa

Tubers

Fungi

Algae

Solution

Question 5

Respiration

Reproduction

Excretion

Movement

Solution

Question 6

(i) and (iv)

(ii) and (iii)

(i) and (iii)

(ii) and (iv)

Solution

Question 7

A new leaf coming out of a tree branch.

A dog giving birth to puppy.

A seed growing into a plant.

Chick hatching from an egg.

Solution

Question 8

Eggs of hen

Seeds of plants

Buds of potato

Roots of mango tree

Solution

Question 9

Budding

Sexual reproduction

Fragmentation

Pollination

Solution

Question 10

Transfer of pollen from anther to ovary.

Transfer of female gametes from anther to stigma.

Transfer of pollen from anther to stigma.

Transfer of pollen from anther to ovule.

Solution

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