Dedifferentiated mass of the cell

Heterozygote obtained asexually

Heterozygote produced by sexual methods

Homozygote produced by sexual reproduction

Non-biological process of producing young ones

Biological process of producing mature ones

Organisms: Crow , Lifespan: 15 Years

Organisms: Parrot , Lifespan: 140 Years

Organisms: Butterfly , Lifespan: 1 to 2 Weeks

Morphologically similar individuals

Genetically similar individuals

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NEET • BIOLOGY • REPRODUCTION IN ORGANISMS

Reproduction in organisms practice · Mixed difficulty

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Showing 1-30 of 90 questions

1 Medium

1 of 90

Remembering +4 | -1

Transverse binary fission occurs in

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Correct option: D

Paramecium

Option D (Paramecium) is correct because Paramecium divides transversely during binary fission, meaning the division occurs across the width of the cell.

2 Easy

2 of 90

Understanding +4 | -1

Which of these statement(s) is/are correct?
i) Stamens are male reproductive part whereas carpels are female reproductive parts.
ii) In Spirogyra, asexual reproduction takes place by fragmentation.
iii) Vegetative propagation by leaves occurs in sweet potato.

View answer and explanation

Correct option: A

(i) and (ii)

Option A ((i) and (ii)) is correct because stamens are indeed the male reproductive parts, carpels are the female reproductive parts, and Spirogyra reproduces asexually through fragmentation.

3 Easy

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Understanding +4 | -1

Rice

View answer and explanation

Correct option: A

is a monocarpic plant

Option A (is a monocarpic plant) is correct because rice is an annual plant that flowers and produces seeds only once in its lifetime.

4 Hard

4 of 90

Understanding +4 | -1

Choose the odd one w.r.t parthenogenesis

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Correct option: D

Frog

Option D (Frog) is correct because parthenogenesis is not a natural or common occurrence in frogs, unlike the other options.

5 Easy

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Remembering +4 | -1

Lowest regeneration power is found in

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Correct option: D

Brain cells

Option D is correct because brain cells have the lowest regeneration power compared to the other options.

6 Easy

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Remembering +4 | -1

Which is the most common method of reproduction in majority of fungi and bacteria?

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Correct option: D

Spore formation

Option D (Spore formation) is correct because many fungi and bacteria reproduce asexually through the formation of spores, which are resistant structures that can develop into new organisms.

7 Easy

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Remembering +4 | -1

Gametogenesis is the formation of

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Correct option: C

Both (1) and (2)

Option C (Both (1) and (2)) is correct because gametogenesis is the process of forming both male and female gametes.

8 Medium

8 of 90

Remembering +4 | -1

Find out the number of chromosomes present in meiocytes of Dog, Rat, Rice, Potato?

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Correct option: C

78,42,24,48

Option C is correct because it lists the correct number of chromosomes in the meiocytes (diploid cells undergoing meiosis) of Dog (78), Rat (42), Rice (24), and Potato (48).

9 Medium

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Remembering +4 | -1

Callus is a

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Correct option: D

Undifferentiated mass of the cell

Option D is correct because callus is an unorganized, undifferentiated mass of cells formed during tissue culture.

10 Medium

10 of 90

Analyzing +4 | -1

(A): Algae and fungi switch to asexual method of reproduction before the onset of adverse conditions

(R): Asexual reproduction may introduce variations and leads to the formation of many clones

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Correct option: D

Both (A) and (R) are false.

Option D (Both (A) and (R) are false) is correct because algae and fungi typically switch to asexual reproduction during FAVORABLE conditions, and asexual reproduction produces clones, which have limited variation.

11 Easy

11 of 90

Understanding +4 | -1

Read the following statements

Statement A : Reproduction enables continuity of the species, generation after generation

Statement B : Zygote is the vital link that ensures continuity of species between organisms of one generation and the next.

Choose the correct option.

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Correct option: D

Both the statements are correct

Option D (Both the statements are correct) is correct because both statements accurately describe the importance of reproduction and the role of the zygote in ensuring species continuity.

12 Hard

12 of 90

Remembering +4 | -1

Monoecious plant of chara shows occurrence of

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Correct option: A

Lower antheridium and Upper oogonium on the same plant

Option A (Lower antheridium and Upper oogonium on the same plant) is correct because in Chara, the antheridium (male sex organ) is located below the oogonium (female sex organ).

13 Easy

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Understanding +4 | -1

Find out the mismatch?

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Correct option: D

External fertilization – Mammals, reptiles, birds

Option D (External fertilization – Mammals, reptiles, birds) is correct because mammals, reptiles, and birds all exhibit internal fertilization, not external fertilization.

14 Easy

14 of 90

Understanding +4 | -1

A clone is

View answer and explanation

Correct option: B

Homozygote obtained asexually

Option B (Homozygote obtained asexually) is correct because asexual reproduction produces genetically identical offspring, and if the parent is homozygous, the offspring will also be homozygous.

15 Medium

15 of 90

Remembering +4 | -1

The staminate and pistillate flowers are found on separate plant body in

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Correct option: A

Date palm

Option A (Date palm) is correct because date palms are dioecious, meaning they have separate staminate (male) and pistillate (female) flowers on different plants.

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

16 Easy

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Remembering +4 | -1

 Humans reproduces…A... Humans are…B…. . Fertilization is C…. in humans . Male and female gametes are…D.. . Zygote is…E.. . The process of release of ovum from a mature follicle is called…F.. . Ovulation is induced by a hormone called…G… . The fusion of male and female gametes is called…H…. . Zygote divides to form..I.. which is implanted in uterus . The structure which provides vascular connection between foetus and uterus is called…J… Blanks in the statements A to J in the above statement is

View answer and explanation

Correct option: D

A-sexually, B-viviparous, C-internal, D- haploid, E- diploid, F-ovulation, G-LH, H-fertilisation, I-blastocyst, J-placenta

Option D is correct as it accurately fills all the blanks with the correct terms related to human reproduction.

17 Hard

17 of 90

Remembering +4 | -1

The chromosome number in meiocyte of rat is

View answer and explanation

Correct option: C

21

Option D (

42

) is incorrect. The chromosome number in meiocyte of rat is 42. The question is asking for the diploid number, not the haploid number.

18 Medium

18 of 90

Understanding +4 | -1

Cell Division is itself a type of reproduction in?

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Correct option: A

Euglena

Option A (Euglena) is correct because Euglena is a unicellular organism where cell division (binary fission) is its primary mode of reproduction.

19 Easy

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Understanding +4 | -1

Emasculation is concerned with

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Correct option: A

Hybridization

Option A (Hybridization) is correct because emasculation, the removal of anthers, is a crucial step in artificial hybridization to prevent self-pollination.

20 Medium

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Remembering +4 | -1

In which one pair, both the plants can be vegetatively 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.

21 Easy

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Remembering +4 | -1

Reproduction is

View answer and explanation

Correct option: A

Biological process of producing young ones

Option A (Biological process of producing young ones) is correct because reproduction is fundamentally a biological process aimed at producing offspring.

22 Medium

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Remembering +4 | -1

Binary fission is the mode of asexual reproduction in

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Correct option: C

Both (1) and (2)

Option C (Both (1) and (2)) is correct because both Amoeba and Paramecium reproduce asexually through binary fission, where the cell divides into two identical daughter cells.

23 Medium

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Asexual reproduction is a method of reproduction in which participation of ……… takes place

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Correct option: A

One individual

Option A (One individual) is correct because asexual reproduction involves a single parent organism producing offspring that are genetically identical to itself.

24 Easy

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Remembering +4 | -1

Female gametes are also called

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Correct option: C

Both (a) and (b)

Option C (Both (a) and (b)) is correct because both "egg" and "ovum" are terms used to refer to the female gamete.

25 Medium

25 of 90

Application +4 | -1

Chromosome number in meiocyte of “A” plant, chromosome number in meiocyte of “B” plant are found in 1 : 2 ratio. Find out the A, B plants.

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Correct option: B

A–Rice, B–Potato

Option B (A–Rice, B–Potato) is correct because Rice has a lower chromosome number than Potato, fitting the 1:2 ratio in their meiocytes.

26 Easy

26 of 90

Understanding +4 | -1

Which of the following statement is not true for a clone?

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Correct option: C

Clone is a result of sexual reproduction

Option C (Clone is a result of sexual reproduction) is correct because clones are produced through asexual reproduction, resulting in genetically identical offspring from a single parent.

27 Easy

27 of 90

Remembering +4 | -1

Asexual reproduction in plants is called

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Correct option: A

Vegetative reproduction

Option A (Vegetative reproduction) is correct because asexual reproduction in plants specifically involves the use of vegetative parts like stems, roots, or leaves to produce new plants.

28 Medium

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Analyzing +4 | -1

Find the mismatch.

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Correct option: C

Organisms: Crocodile , Lifespan: 600 Years

Option C (Organisms: Crocodile , Lifespan: 600 Years) is the mismatch because the lifespan of a crocodile is typically around 70-100 years, not 600 years.

29 Easy

29 of 90

Understanding +4 | -1

Pre – fertilization events includes?

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Correct option: C

Both 1 and 2

Option C (Both 1 and 2) is correct because pre-fertilization events include both gametogenesis (formation of gametes) and gamete transfer.

30 Medium

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Understanding +4 | -1

Clones are

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Correct option: C

Both (1) and (2)

Option C (Both (1) and (2)) is correct because clones are individuals that are both morphologically (physically) and genetically identical.

Revision notes and key takeaways

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