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NEET • BIOLOGY • REPRODUCTION IN ORGANISMS

Reproduction in organisms practice · Mixed difficulty

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Showing 31-60 of 90 questions

31 Medium

31 of 90

Understanding +4 | -1

In which type of organism asexual reproduction is seen?

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Correct option: D

1 and 3

Option D (1 and 3) is correct because asexual reproduction is commonly seen in both unicellular and multicellular organisms.

32 Medium

32 of 90

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Immortal individuals are

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Correct option: A

Single celled organisms

Option A is correct because single-celled organisms that reproduce by binary fission are considered immortal as their cellular material is passed on to daughter cells.

33 Hard

33 of 90

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Air layering is performed in case of

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Correct option: D

Litchi

Option D (Litchi) is correct because air layering is a common propagation method specifically used for Litchi trees.

34 Easy

34 of 90

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Parthenogenesis is the process in which new organism is formed

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Correct option: B

Without fertilization

Option B (Without fertilization) is correct because parthenogenesis is a form of asexual reproduction where an egg develops without being fertilized.

35 Easy

35 of 90

Remembering +4 | -1

In Banana and water hyacinth, vegetative propagation takes place by

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Correct option: D

Rhizome and offset respectively

Option D is correct because banana propagates through rhizomes and water hyacinth propagates through offsets.

36 Easy

36 of 90

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In ginger vegetative propagation occurs through:

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Correct option: D

Rhizome

Option D (Rhizome) is correct because ginger is a modified stem that grows horizontally underground and has nodes that can give rise to new plants.

37 Hard

37 of 90

Understanding +4 | -1

A few statements describing certain features of reproduction are given below?
I) Gametic fusion takes place
II) Transfer of genetic material takes place
III) Reduction division takes place
IV) Progeny have identical resemblance with parents
How many of the above statements are true for sexual reproduction?

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Correct option: C

I, II, III only

Option C (I, II, III only) is correct because sexual reproduction involves gametic fusion, transfer of genetic material, and reduction division (meiosis), but progeny are not identical to parents due to recombination.

38 Medium

38 of 90

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Large number of offspring produced in the case of

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Correct option: A

Fertilization that occur in external medium

Option A (Fertilization that occur in external medium) is correct because organisms that undergo external fertilization typically release a large number of gametes to increase the chances of fertilization, as the process is subject to environmental factors and predation.

39 Easy

39 of 90

Understanding +4 | -1

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

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Correct option: C

Pollination

Option C (Pollination) is correct because pollination is the mechanism by which pollen grains (carrying male gametes) are transferred to the stigma of the pistil, facilitating fertilization in flowering plants.

40 Medium

40 of 90

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Which of the correct example of the type of regeneration out of the two major types?

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Correct option: A

Morphallaxis–regeneration of two transversely cut equal pieces of one Hydra into two small Hydras

Option A (Morphallaxis–regeneration of two transversely cut equal pieces of one Hydra into two small Hydras) is the correct example of morphallaxis because it involves the remodeling of existing tissues to regenerate the whole organism.

41 Medium

41 of 90

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The condition in which male and female parts present on the different plant, is called

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Correct option: D

All of these

Option D (All of these) is correct because heterothallic, dioecious, and unisexual all describe the condition where male and female reproductive parts are present on different plants.

42 Hard

42 of 90

Understanding +4 | -1

The term ‘clone’ cannot be applied to offspring formed by sexual reproduction because

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Correct option: A

Offspring do not possess exact copies of parental DNA

Option A (Offspring do not possess exact copies of parental DNA) is correct because sexual reproduction involves genetic recombination, leading to offspring with a unique combination of genes different from either parent.

43 Medium

43 of 90

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Sugarcane is cultivated through

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Correct option: A

Stem cutting

Option A (Stem cutting) is correct because sugarcane is typically propagated by planting sections of the stem that contain nodes, which can develop into new plants.

44 Medium

44 of 90

Analyzing +4 | -1

Assertion: Endosperm in gymnosperms is haploid as it is formed before fertilization.
Reason: Endosperms is formed post-fertilization in angiosperms and is diploid.

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Correct option: C

If Assertion is true but Reason is false

Option C (If Assertion is true but Reason is false) is correct because endosperm in gymnosperms is haploid and formed before fertilization, but in angiosperms, it's triploid and formed post-fertilization.

45 Easy

45 of 90

Remembering +4 | -1

Vegetative propagation in mint occurs by?

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Correct option: C

Stolen

Option C is correct because mint plants spread horizontally using stolons, which are above-ground stems that root at nodes.

Explore Other Chapters in BIOLOGY

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ANIMAL KINGDOM 756 MCQs PLANT KINGDOM 415 MCQs ANATOMY OF FLOWERING PLANTS 404 MCQs MOLECULAR BASIS OF INHERITANCE 404 MCQs CHEMICAL COORDINATION AND INTEGRATION 387 MCQs PRINCIPLE OF INHERITANCE AND VARIATION 374 MCQs

46 Hard

46 of 90

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Which one group of plants is propagated through underground roots?

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Correct option: D

Asparagus, dahlia, murraya

Option D (Asparagus, dahlia, murraya) is correct because these plants can be propagated through modified underground roots, allowing for vegetative reproduction.

47 Easy

47 of 90

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Which of the following organisms is considered to be immortal?

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Correct option: D

Amoeba

Option D is correct because Amoeba reproduces through binary fission, where the parent cell divides into two identical daughter cells, effectively continuing its lineage indefinitely.

48 Hard

48 of 90

Understanding +4 | -1

Which of the following pairs is not correctly matched? Mode of reproduction Example

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Correct option: A

Binary fission Sargassum

Option A (Binary fission Sargassum) is not correctly matched because Sargassum is a multicellular alga that reproduces sexually and asexually through fragmentation, not binary fission.

49 Easy

49 of 90

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In oviparous individuals the fertilized egg is covered by

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Correct option: D

Hard shell

Option D (Hard shell) is the correct answer because it accurately describes the protective covering of a fertilized egg in oviparous animals.

50 Easy

50 of 90

Remembering +4 | -1

In which one pair both the plants can be vegetative propagated by leaf pieces?

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Correct option: A

Bryophyllum and Kalanchoe

Option A (Bryophyllum and Kalanchoe) is correct because both these plants have leaves with buds that can develop into new plants.

51 Medium

51 of 90

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Self-fertilisation occurs in the

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Correct option: A

Bisexual flower

Option A (Bisexual flower) is correct because self-fertilization can only occur in flowers that contain both male and female reproductive organs.

52 Medium

52 of 90

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Seasonal breeders are the organisms which reproduces during

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Correct option: A

Favourable season only

Option A (Favourable season only) is correct because seasonal breeders reproduce only during specific times of the year when environmental conditions are suitable.

53 Easy

53 of 90

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Stem cutting are commonly used for the propagation of

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Correct option: B

Rose

Option B (Rose) is correct because stem cuttings are a common and effective method for propagating roses.

54 Hard

54 of 90

Remembering +4 | -1

In animals normally which organism has maximum number of
chromosomes?

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Correct option: D

Chimpanzee

Option A (Butterfly) is incorrect. While the question is flawed (Chimpanzee is not the correct answer), Butterfly has the highest number of chromosomes among the options.

55 Easy

55 of 90

Remembering +4 | -1

Vegetatively propagated plants

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Correct option: D

Clone of their parents

Option D is correct because vegetative propagation produces offspring that are genetically identical to the parent plant, hence clones.

56 Hard

56 of 90

Understanding +4 | -1

The male gametes of rice plant have 12 chromosomes in their nucleus. The chromosome number in the female gamete, zygote and the cells of the seedling will be respectively?

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Correct option: C

12, 24, 24

Option C (12, 24, 24) is correct because male and female gametes are haploid (n), zygote is diploid (2n), and seedling cells are also diploid (2n).

57 Medium

57 of 90

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Single celled animals are said to be immortal because

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Correct option: D

They continue to live as their daughter cells

Option D is correct because single-celled organisms reproduce by division, and the parent cell ceases to exist as a separate entity, continuing as daughter cells.

58 Hard

58 of 90

Understanding +4 | -1

Individuals obtained through asexual reproduction are

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Correct option: C

Both 1 and 2

Option C (Both 1 and 2) is correct because individuals obtained through asexual reproduction are both phenotypically (physical appearance) and genotypically (genetic makeup) similar.

59 Medium

59 of 90

Understanding +4 | -1

Where does syngamy occur in ……..

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Correct option: C

Both (a) and (b)

Option C (Both (a) and (b)) is correct because syngamy, the fusion of gametes, can occur in both external and internal mediums depending on the organism.

60 Medium

60 of 90

Remembering +4 | -1

The condition, in which, both male and female reproductive organs are found on the same plant, is called

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Correct option: C

Both (2) and (4)

Option D (Monoecious) is correct because monoecious plants have both male and female reproductive organs on the same plant, which is also referred to as being bisexual.

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