Reproduction in Organisms Test

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Reproduction in Organisms Test - 43

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following is a bisexual animal?

A
Snail

B
Starfish

C
Earthworm

D
All of the above

Solution

Bisexual animals, also called as hermaphrodites are the organisms having reproductive organs normally associated with both male and female sexes. Many invertebrates and a significantly smaller number of vertebrates are hermaphrodites. Examples of Hermaphrodites are :
Snails:- Most snails are hermaphrodites. The only exceptions include certain freshwater and marine species, such as apple snails and periwinkle snails.
Echinoderms:- Echinoderms are marine invertebrates. They include sea stars, sea cucumbers, sea urchins and sand dollars. Some of the most well-known echinoderms are also hermaphrodites.
Worms:- Another class of invertebrates, worms, adds to the proliferation of hermaphroditism. Some worms can fertilize themselves, but for the most part, worms need a mate to reproduce.
Fishes:- Around 21 families of fish are natural hermaphrodites. These unique hermaphroditic vertebrates include snook, clown fish, wrasse, angelfish, grouper, goby, parrot fish, sea bass, starfish and anthias.
Question 2
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Bisexual animals can use which mode of reproduction?

A
Self-fertilization

B
Cross-fertilization

C
Parthenogenesis

D
All of the above

Solution

The bisexual animals possess the male as well as the female reproductive organs in the same body. The organisms can reproduce by various methods. The sperms from the male reproductive system can fertilize the female gamete in the same body by self-fertilization. In certain organisms, the self-fertilization is prevented because one of the reproductive systems develops before the other. In such animals, cross-fertilization is preferred in which the male gamete from one animal fertilizes the female gamete of the another. Parthenogenesis is the reproduction by the ovum without the process of fertilization. In certain lower organisms, parthenogenesis can be observed.
Thus, the correct answer is option D.
Question 3
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Self-fertilization occurs in bisexual animals except

A
Flatworms

B
Molluscs

C
Earthworm

D
Both A and B

Solution

Self-fertilisation is the fertilisation of plants and some invertebrate animals by their own sperm rather than that of another individual. It occurs in bisexual animals as in flatworms and molluscs but though earthworm has both male and female sex organs, they cannot self-fertilize because sperms and ova mature at the different time. Thus, the correct answer is option D.
Question 4
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Which of the following is associated with reproduction?

A
Parthenogenesis

B
Fertilization

C
STDs

D
All of the above

Solution

Parthenogenesis is a natural form of asexual reproduction in which growth and development of embryos occur without fertilization.
Fertilization is the action or process of fertilizing an egg or a female animal or plant, involving the fusion of male and female gametes to form a zygote.
STDs stands for sexually transmitted disease. It is the infection transmitted through sexual contact, caused by bacteria, viruses or parasites.
So, the correct answer is option D.
Question 5
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The process by which a single organism breaks to give rise to many organism is :

A
Fragmentation

B
Fermentation

C
Fertilisation

D
Fusion
Question 6
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List - A List - B
1. Fragmentation Hydra
2. Budding Paramoecium
3. Binary fission Snail
Identify the mis-matched pairs.

A
1, 2

B
2, 3

C
1, 3

D
1, 2, 3

Solution

The pattern of asexual reproduction observed in Hydra is budding. A bud is formed which develops to form a new individual organism. In the case of paramoecium, fission is the type of reproduction. In the case of snail, there is sexual reproduction in which fertilisation occurs and the eggs are laid from which a new individual is formed.
Thus, the correct answer is option D.
Question 7
1 / -0

For binary fission, amoeba requires ....... parent cells.

A
Three

B
Two

C
One

D
Zero
Solution
- For, binary fission, Amoeba requires one parent cell. In the process of binary fission, a fully grown cell divides into two equal halves forming two daughter cells.
- It is the most common method of asexual reproduction that occurs in prokaryotes and some single-celled eukaryotes, i.e., Amoeba.
  Hence, correct answer is C.
Question 8
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Which of the following is a mode of asexual reproduction?

A
Fission

B
Budding

C
Spore formation

D
All of these

Solution

Asexual reproduction is the mode of reproduction in prokaryotes and some of the single celled eukaryotes. In this process only one parent is involved which produces the offspring. It takes by various means like fission or binary fission in Amoeba, budding in Yeast and Hydra and spore formation in protozoans and lower plants.
Question 9
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The process of production of a closely resembled young one is called

A
Reproduction

B
Division

C
Growth

D
None of the above
Solution
- Cell Division results in two or more daughter cells.
- Growth is the irreversible increase in the dry mass of an organism. It is brought about by an increase in cell size or number.
- Reproduction results in production of closely resembling young ones.
- So, the correct option is 'Reproduction'.
Question 10
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Which of the following processes maintains the existence of the species on the earth?

A
Metabolism

B
Reproduction

C
Adaptation

D
Growth
Solution
Metabolism is a term that is used to describe all chemical reactions involved in maintaining the living state of the cells and the organism.
Reproduction is a biological process by which new individual organisms or offspring are produced from their parents. It is a fundamental feature of all known life and each individual organism exists as the result of reproduction.
Adaptation is the process of change by which an organism or species becomes better suited to its environment.
So, the correct answer is option B.

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	List - A	List - B
1.	Fragmentation	Hydra
2.	Budding	Paramoecium
3.	Binary fission	Snail

Reproduction in Organisms Test - 43

Result

Reproduction in Organisms Test - 43

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Rank

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SHARING IS CARING

Question 1

Snail

Starfish

Earthworm

All of the above

Solution

Question 2

Self-fertilization

Cross-fertilization

Parthenogenesis

All of the above

Solution

Question 3

Flatworms

Molluscs

Earthworm

Both A and B

Solution

Question 4

Parthenogenesis

Fertilization

STDs

All of the above

Solution

Question 5

Fragmentation

Fermentation

Fertilisation

Fusion

Question 6

1, 2

2, 3

1, 3

1, 2, 3

Solution

Question 7

Three

Two

One

Zero

Solution

Question 8

Fission

Budding

Spore formation

All of these

Solution

Question 9

Reproduction

Division

Growth

None of the above

Solution

Question 10

Metabolism

Reproduction

Adaptation

Growth

Solution

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