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NEET • BIOLOGY • REPRODUCTION IN ORGANISMS
Reproduction in organisms practice · Hard
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1
Hard
1 of 18
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.
2
Hard
2 of 18
Remembering
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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).
3
Hard
3 of 18
Remembering
+4 | -1
The chromosome number in meiocyte of rat is
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Correct option: C
Option D () is incorrect. The chromosome number in meiocyte of rat is 42. The question is asking for the diploid number, not the haploid number.
4
Hard
4 of 18
Remembering
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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.
5
Hard
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Understanding
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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?
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.
6
Hard
6 of 18
Understanding
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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.
7
Hard
7 of 18
Remembering
+4 | -1
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.
8
Hard
8 of 18
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.
9
Hard
9 of 18
Remembering
+4 | -1
In animals normally which organism has maximum number of
chromosomes?
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.
10
Hard
10 of 18
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).
11
Hard
11 of 18
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.
12
Hard
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Understanding
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In a practical test, a student has to identify the organisms in which syngamy does not occur. In those organisms the female gamete undergoes development to form new organisms without fertilization. This phenomenon is called "X". Identify the organisms and the phenomenon "X".
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Correct option: D
Honeybee, Parthenogenesis
Option D (Honeybee, Parthenogenesis) is correct because honeybees exhibit parthenogenesis, where unfertilized eggs develop into new individuals.
13
Hard
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Understanding
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(A): Plants flower every year in a particular season are called polycarpic plants
(R): All perennial plants are polycarpic
(R): All perennial plants are polycarpic
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Correct option: C
A is true but R is false
Option C (A is true but R is false) is correct because plants that flower every year in a particular season are called polycarpic plants, but not all perennial plants are polycarpic; some are monocarpic.
14
Hard
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Understanding
+4 | -1
Nothing lives forever, but life continues'. What does it mean?
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Correct option: A
Older die but new are produced due to reproduction
Option A (Older die but new are produced due to reproduction) is correct because it accurately describes the continuation of life through reproduction and the natural cycle of death and birth.
15
Hard
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Remembering
+4 | -1
Regeneration by the transformation of already present body tissues is known as
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Correct option: C
morphallaxis
Option C (morphallaxis) is correct because morphallaxis is regeneration that involves the remodeling of existing tissues to form a new organism or body part.
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16
Hard
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Understanding
+4 | -1
Which one of the following statements is NOT correct?
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Correct option: D
Algal blooms caused by excess of organic matter in water improve water quality and promote fisheries
Option D (Algal blooms caused by excess of organic matter in water improve water quality and promote fisheries) is NOT correct because algal blooms deplete oxygen and harm aquatic life, thus worsening water quality and harming fisheries.
17
Hard
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Understanding
+4 | -1
The number of chromosomes in the shoot tip cells of maize plant is 20. The number of chromosomes in the microspore mother cells of the same plant shall be?
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Correct option: A
20
Option A (20) is correct because the shoot tip cells and microspore mother cells are both diploid (2n), so they have the same number of chromosomes.
18
Hard
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Understanding
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[A]: In Parthenogenesis, fertilized egg is stimulated to divide.
[R]: It is a type of reproduction through which animals are not able to eliminate non adaptive characters and sterility.
[R]: It is a type of reproduction through which animals are not able to eliminate non adaptive characters and sterility.
View answer and explanation
Correct option: D
Both A and R are false
Option D is correct because both the assertion and the reason are incorrect regarding parthenogenesis and its implications.
Revision notes and key takeaways
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Key Takeaways
- ✓ This set contains 18 single-correct-answer MCQs on REPRODUCTION IN ORGANISMS.
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