Reproduction in Organisms Test

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Reproduction in Organisms Test - 40

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Question 1
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Yeast under anaerobic conditions are cultured in a flask of nutrient broth. The yeast that are most fit are those that

A
Ferment the fastest

B
Consume less of the limited oxygen supply

C
Survive the longest

D
Produce the most ATP

E
Produce the most buds

Solution

The definition of fitness describes an organism that is successful at passing its genes on to the next generation. Because yeast reproduce by budding, the yeast that produce the most buds are the most successful at passing their genes on and are therefore the most fit.
Question 2
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Oviparous mammal is __________.

A
Equus

B
Macropus

C
Ornithorhynchus

D
Pteropus

Solution

Ornithorhynchus is the scientific name of platypus. It is a semiaquatic egg-laying mammal endemic to eastern Australia. The animal is the sole living representative of its family (Ornithorhynchidae) and genus (Ornithorhynchus), though a number of related species have been found in the fossil record
So, the correct answer is 'Ornithorhynchus'
Question 3
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Which of the following method is responsible for production of seedless fruit?

A
Binary fission

B
Budding

C
Spore formation

D
Vegetative propagation

E
Parthenogenesis

Solution

Parthenogenesis is the process of reproduction from an ovum without fertilization. It is practised in plants as parthenocarpy, plant hormones like gibberellins are utilized for simulation of fruit production without fertilization essentially giving rise to seedless fruits. Hence the correct answer is 'Parthenogenesis'.
Question 4
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In which of the following phenomena the two participating organisms act as gametes?

A
Isogamy

B
Anisogamy

C
Hologamy

D
Conjugation

E
None of the above

Solution

The process in which organisms itself acts as gametes is called as hologamy or it means while sexually reproducing, the gametes produced are of the same size and structure as the somatic cells. Thus, the correct answer is option C.
Question 5
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........... form of asexual reproduction produces organisms in the form of fragments.

A
Fragmentation

B
Budding

C
Binary fission

D
None of the above

Solution

A. Fragmentation is the process of breaking down of parent individual into small pieces or fragments accidentally or through external force. Each piece or fragment develops into a new individual. Fragments are the part of the body of an organism that may develop into a new individual.
B. Budding is the process in which the parent cell produces one or more bud like protuberances which detach from parent cell and grow into new individual.
C. Binary fission is the process of division of parent cell into two daughter cells of equal size. During binary fission, the cell elongates and its nucleus divides into two daughter nuclei.
Hence, the form of asexual reproduction produces organisms in the form of fragments is fragmentation. So, the correct answer is 'Fragmentation'.
Question 6
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.......... is a form of reproduction which does not involve a male gamete.

A
Fragmentation

B
Spores

C
Budding

D
Agamogenesis

Solution

Fragmentation, budding and spore formation are types of asexual reproduction where no gamete formation takes place. Here, a single organism produces offspring without the involvement of any other organism or gamete formation.
While agamogenesis does not involve a male gamete though organisms Are capable of producing male gametes or undergoing sexual reproduction. Parthenogenesis is an example of agamogenesis in which an unfertilized egg develops into a new individual. Honeybee and turkey undergo parthenogenesis.
So, the correct option is 'Agamogenesis'.
Question 7
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Following diagrams were drawn by different students on having seen prepared slides of budding in yeast.
Correct diagrams are

A
I, II, III

B
II, III, IV

C
III, IV, V

D
I, IV, V

Solution

Budding is the mode of asexual reproduction wherein an outgrowth of part of a cell/body develops into progeny and either get separated or remain attached to the parent to form a new colony. Options II and III are incorrect as nucleus should be present in all buds. Option I show bud formation and nuclear division. Options IV and V show the chain of cells produced by budding.
Therefore, the correct answer is option D.
Question 8
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From the given diagrams, select the correct ones showing stages of binary fission in Amoeba.

A
I, II, III

B
IV, II, III

C
V, II, III

D
IV, I, III

Solution

Binary fission is an asexual mode of reproduction in Amoeba wherein replication of chromosome (IV) is followed by inward growth of cytoplasmic membrane (II) toward the centre to divide the cell into two daughter cells (III). Figure I shows budding which mainly takes place in yeast.
So, the correct answer is option B.
Question 9
1 / -0

Assisted reproductive technology does not include

A
Parthenogenesis

B
Gamete intra fallopian transfer

C
Zygote intra fallopian transfer

D
Artificial insemination

Solution

Assisted reproductive technology (ART) is the technology used for fertility treatment and surrogacy. Parthenogenesis is mainly a process of formation of the embryo from an unfertilized ovum. It is not included as assisted reproductive technology.
Thus, the correct answer is option (C).
Question 10
1 / -0

The period between the two season is known as

A
Estrus

B
Proestrus

C
Anestrus

D
Metestrus
Solution
- The first phase (proestrus) of the estrous cycle is the building-up phase. During this phase the ovarian follicle (under the influence of FSH and LH) enlarges and begins to secrete estrogens.
- Estrus is the period of sexual receptivity. It is primarily initiated by the elevation in estrogens from mature follicles just prior to ovulation.
- The end of sexual receptivity marks the beginning of metestrus, the post-ovulatory phase dominated by corpus luteum function.
- Anestrus is a state or interval of sexual inactivity between periods of activity in periodically breeding mammals.
- So, the correct option is 'Anestrus'.

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Reproduction in Organisms Test - 40

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Reproduction in Organisms Test - 40

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SHARING IS CARING

Question 1

Ferment the fastest

Consume less of the limited oxygen supply

Survive the longest

Produce the most ATP

Produce the most buds

Solution

Question 2

Equus

Macropus

Ornithorhynchus

Pteropus

Solution

Question 3

Binary fission

Budding

Spore formation

Vegetative propagation

Parthenogenesis

Solution

Question 4

Isogamy

Anisogamy

Hologamy

Conjugation

None of the above

Solution

Question 5

Fragmentation

Budding

Binary fission

None of the above

Solution

Question 6

Fragmentation

Spores

Budding

Agamogenesis

Solution

Question 7

I, II, III

II, III, IV

III, IV, V

I, IV, V

Solution

Question 8

I, II, III

IV, II, III

V, II, III

IV, I, III

Solution

Question 9

Parthenogenesis

Gamete intra fallopian transfer

Zygote intra fallopian transfer

Artificial insemination

Solution

Question 10

Estrus

Proestrus

Anestrus

Metestrus

Solution

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