Reproduction in Organisms Test

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Reproduction in Organisms Test - 59

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Question 1
1 / -0

The uniparental reproduction is called _______ reproduction while biparental reproduction is termed _________ reproduction. Higher organisms mostly show ________ reproduction.

A
Sexual, asexual, sexual

B
Asexual, sexual, asexual

C
Asexual, sexual, sexual

D
Sexual, asexual, asexual

Solution

Asexual reproduction is a type of reproduction which involves a single parent. The offsprings are genetically identical to each other and to the parent. All prokaryotes and some eukaryotes reproduce this way. Sexual reproduction involves two parents. In sexual reproduction, parents produce reproductive cells—called gametes—that unite to form an offspring. Sexual reproduction is by far the most common life cycle in eukaryotes, for example, animals and plants.
Thus, the correct option is 'Asexual, sexual, sexual.'
Question 2
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Match the organisms given in column I with their mode of reproduction in column II and select the correct answer from the codes given below.
Column I Column II
A. Potato (i) Zoospores
B. Spirogyra (ii) Stem cuttings
C. Rose (iii) Conidiospores
D. Penicillium (iv) Stem tubers

A
$$A - (i), B - (iii), C - (ii), D - (iv)$$

B
$$A - (iv), B - (i), C - (ii), D - (iii)$$

C
$$A - (iv), B - (i), C - (iii), D - (ii)$$

D
$$A - (ii), B - (i), C - (iv), D - (iii)$$

Solution

A. Tubers are modified underground stem branches having several buds. Each eye of the potato tuber is a bud which grows into a new potato plant when planted with a portion of the swollen tuber. The potato crop is raised by tubers, not by seeds.
B. Zoospores are special kind of motile and flagellated spores produced inside the zoosporangia. The reproduction by zoospores occurs in some lower fungi- Phycomycetes. ( e.g., Achlya, Spirogyra, Albugo).
C. Stem cutting is most commonly used for artificial vegetative propagation. About 20-30 cm long pieces of stem are planted in the natural position in the soil for proper sprouting. E.g., grapes, Sugarcane, Rose.
D. Conidiospores are non- motile spores produced singly or in chains by constriction at the tip or lateral side of special hyphal branches, called conidiophores. E.g., Penicillium.
So, the correct answer is 'A- iv, B-i, C- ii, D-iii'.
Question 3
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Staminate flower produce

A
Eggs

B
Antherozoids

C
Fruits

D
All of the above

Solution

Staminate flowers are those which have only male propagative organs, or stamens, or have infertile female organs. Flowers produce only pollen (antherozoids) and are not capable of producing fruit. So, the correct answer is 'Antherozoids'.
Question 4
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The growth phase of an organism before attaining sexual maturity is referred to as

A
Juvenile phase

B
Vegetative phase

C
Both (a) and (b)

D
None of these

Solution

Juvenile phase is pre-reproductive phase in life cycle of an individual. It is the period of growth between the birth of an individual upto reproductive maturity. Juvenile phase is known as vegetative phase in plants. This phase is of different durations in different organisms.
So, the correct answer is 'Both (a) and (b)'
Question 5
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Refer to the given figure and identify $$X, Y$$ and $$Z$$ in it.

A
$$X - Buds, Y - Nodes, Z - Adventitious\ Root$$

B
$$X - Nodes, Y - Buds, Z - Adventitious\ Root$$

C
$$X - Nodes, Y - Adventitious\ Root, Z - Buds$$

D
$$X - Buds, Y - Adventitious\ Root, Z - Nodes$$

Solution

Underground modification of stem: Rhizome is fleshy, non- green underground stem. It has distinct nodes and internodes. The nodes bear dry scale leaves with axillary buds. Terminal buds also present. Adventitious roots arise from the lower side. The rhizome that grows obliquely is called rootstock rhizome( e.g., Alocasia, Dryo Pteris, Banana etc.) and when grow horizontally is called straggling rhizome (e.g., Ginger, turmeric, Canna etc.)
So, the correct answer is X- Nodes, Y- Buds, Z- Adventitious Root'.
Question 6
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Following table summarises the differences between self-fertilisation and cross-fertilisation. Pick out the wrong difference.

A
Self-fertilisation - It is uniparental, Cross-fertilisation - It is biparental

B
Self-fertilisation - It involves the fusion of male and female gametes of the same parent, Cross-fertilisation - It involves the fusion of two gametes produced by different parents

C
Self-fertilisation - Examples : Pheretima, Periplaneta, Cross-fertilisation - Examples : Taenia, Rana tigrina

D
None of the above

Solution

Self-fertilisation occurs in Taenia, while cross-fertilisation occurs in Pheretima, Periplaneta and Rana tigrina.
Question 7
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Which of the following options shows bisexual animals only?

A
Amoeba, sponge, leech

B
Sponge, cockroach, Amoeba

C
Earthworm, sponge, leech

D
Tapeworm, earthworm, honeybee

Solution

When both male and female sex organs are present in the same individual, such animals are called hermaphrodite or bisexual, e.g, tapeworm, earthworm and leech.
So, the correct answer is 'Earthworm, sponge, leech'.
Question 8
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Offsprings of oviparous animals are at greater risk of survival as compared to those of viviparous animals because

A
Proper embryonic care and protection is absent

B
Embryo does not develop completely

C
Progenies are of smaller size

D
Genetic variations do not occur

Solution

In oviparous animals such as reptiles and birds, fertilized eggs are covered by hard calcareous shells and are laid in a safe place. After the incubation period, young ones hatch out. In viviparous animals such as majority of mammals including human beings, the zygote develops into a young one inside the body of the female individual. After certain growth, young ones are delivered by the female individual. Due to proper care and protection, the chances of survival of young ones are more in viviparous individuals.
So, the correct answer is 'Proper embryonic care and protection is absent'.
Question 9
1 / -0

In flowering plants, both male and female gametes are non-motile. The method to bring them together for fertilisation is _________.

A
Water

B
Air

C
Pollination

D
Apomixis

Solution

The transfer of pollen grains from the anther to the stigma is called pollination. Pollen grains are immobile. They cannot reach the stigma by themselves. An external agent is required for this. It can be wind, water, animal, gravity or growth contact.

So, the correct answer is 'Pollination'.
Question 10
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Development of new individual from female gamete without fertilisation is termed as

A
Syngamy

B
Embryogenesis

C
Oogamy

D
Parthenogenesis

Solution

Development of an egg (ovum) into a complete individual without fertilisation is known as parthenogenesis. It is observed in many invertebrates (rotifers, arthropods), insects (bees, wasps) and some birds, etc.

So, the correct answer is 'Parthenogenesis'.

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Re-Attempt Weekly Quiz Competition

Column I	Column II
A. Potato	(i) Zoospores
B. Spirogyra	(ii) Stem cuttings
C. Rose	(iii) Conidiospores
D. Penicillium	(iv) Stem tubers

Reproduction in Organisms Test - 59

Result

Reproduction in Organisms Test - 59

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Rank

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SHARING IS CARING

Question 1

Sexual, asexual, sexual

Asexual, sexual, asexual

Asexual, sexual, sexual

Sexual, asexual, asexual

Solution

Question 2

$$A - (i), B - (iii), C - (ii), D - (iv)$$

$$A - (iv), B - (i), C - (ii), D - (iii)$$

$$A - (iv), B - (i), C - (iii), D - (ii)$$

$$A - (ii), B - (i), C - (iv), D - (iii)$$

Solution

Question 3

Eggs

Antherozoids

Fruits

All of the above

Solution

Question 4

Juvenile phase

Vegetative phase

Both (a) and (b)

None of these

Solution

Question 5

$$X - Buds, Y - Nodes, Z - Adventitious\ Root$$

$$X - Nodes, Y - Buds, Z - Adventitious\ Root$$

$$X - Nodes, Y - Adventitious\ Root, Z - Buds$$

$$X - Buds, Y - Adventitious\ Root, Z - Nodes$$

Solution

Question 6

Self-fertilisation - It is uniparental, Cross-fertilisation - It is biparental

Self-fertilisation - It involves the fusion of male and female gametes of the same parent, Cross-fertilisation - It involves the fusion of two gametes produced by different parents

Self-fertilisation - Examples : Pheretima, Periplaneta, Cross-fertilisation - Examples : Taenia, Rana tigrina

None of the above

Solution

Question 7

Amoeba, sponge, leech

Sponge, cockroach, Amoeba

Earthworm, sponge, leech

Tapeworm, earthworm, honeybee

Solution

Question 8

Proper embryonic care and protection is absent

Embryo does not develop completely

Progenies are of smaller size

Genetic variations do not occur

Solution

Question 9

Water

Air

Pollination

Apomixis

Solution

Question 10

Syngamy

Embryogenesis

Oogamy

Parthenogenesis

Solution

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