Appearance of vegetative propagules from the nodes of plants such as sugarcane and ginger is mainly because:

1. Nodes are shorter than internodes
2. Nodes have meristematic cells
3. Nodes are located near the soil
4. Nodes have non-photosynthetic cells

Subtopic:  Asexual Reproduction |
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Which of the following statements supports the view that elaborate sexual reproductive processes appeared much later in organic evolution?

i. Lower groups of organisms have a simpler body design
ii. Asexual reproduction is common in lower groups
iii. Asexual reproduction is common in higher groups of organisms
iv. The high incidence of sexual reproduction in angiosperms and vertebrates
Choose the correct answer from the options given below:
1. i, ii, and iii 2. i, iii, and iv
3. i, ii, and iv 4. ii, iii, and iv
Subtopic:  Asexual Reproduction |
 83%
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Offspring formed by sexual reproduction exhibit more variation than those formed by Asexual reproduction because:

1. Sexual reproduction is a lengthy process
2. Gametes of parents have a qualitatively different genetic composition
3. Genetic material comes from parents of two different species
4. Greater amount of DNA is involved in sexual reproduction
Subtopic:  Sexual Reproduction |
 60%
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Choose the correct statement from the following:

1. Dioecious (hermaphrodite) organisms are seen only in animals.
2. Dioecious organisms are seen only in plants.
3. Dioecious organisms are seen in both plants and animals.
4. Dioecious organisms are seen only in vertebrates.

Subtopic:  Sexual Reproduction |
 88%
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There is no natural death in single-celled organisms like Amoeba and bacteria because:

1. They cannot reproduce sexually

2. They reproduce by binary fission

3. Parental body is distributed among the offspring

4. They are microscopic

Subtopic:  Asexual Reproduction |
 72%
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There are various types of reproduction. The type of reproduction adopted by an organism depends on:

1. The habitat and morphology of the organism
2. Morphology of the organism
3. Morphology and physiology of the organism
4. The organism’s habitat, physiology, and genetic makeup
Subtopic:  Introduction |
 81%
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Identify the incorrect statement :

1. In asexual reproduction, the offspring produced are morphologically and genetically identical to the parent
2. Zoospores are sexual reproductive structures
3. In asexual reproduction, a single parent produces offspring with or without the formation of gametes
4. Conidia are asexual structures in Penicillium
Subtopic:  Asexual Reproduction |
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Which of the following is a post-fertilisation event in flowering plants?

1. Transfer of pollen grains

2. Embryo development

3. Formation of flower

4. Formation of pollen grains

Subtopic:  Events during Sexual reproduction |
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The number of chromosomes in the shoot-tip cells of a maize plant is 20. The number of chromosomes in the microspore mother cells of the same plant shall be:

1. 20

2. 10

3. 40

4. 15

Subtopic:  Sexual Reproduction |
 68%
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The product of sexual reproduction generally generates:
1. Large biomass
2. Longer viability of seeds
3. Prolonged dormancy
4. New genetic combinations leading to variations

Subtopic:  Sexual Reproduction |
 94%
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