Plants like Elm (Ulmus), Dandelion (Taraxacum) and members of Rose Family vegetatively reproduce by
(1) Rhizome
(2) Sucker
(3) Stolon
(4) Corm
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The vegetative propagule of Bryophyllum is:
1. Bulbil
2. Leaf buds
3. Rhizome
4. Offset
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Water hyacinth is one of the most invasive weeds primarily because:
1. It gets adapted to any fresh water body easily
2. It produces secondary metabolites against herbivores
3. It can propagate vegetatively at a phenomenal rate
4. It is predated upon by a large number of organisms
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Isogametes are seen in:
1. Cladophora
2. Fucus
3. Human beings
4. Ficus
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The number of chromosomes in a meiocyte of the fruit fly is:
(1) 4
(2) 8
(3) 12
(4) 16
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The most critical event in sexual reproduction is:
(1) Gametogenesis
(2) Gamete transfer
(3) Fertilization
(4) Embryogenesis
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With respect to organisms exhibiting internal fertilization, organisms exhibiting external fertilization show:
1. More variations
2. Great synchrony between sexes
3. Large female size than males
4. Less vulnerability to predation
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Ginger is vegetatively propagated through:
(1) Rhizome
(2) Bulbil
(3) Stolon
(4) Offset
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In animals exhibiting internal fertilization:
(1) There is high synchrony between the two sexes
(2) The chances of desiccation of the embryo is high
(3) The male gamete is motile
(4) Vulnerability to predators is increased
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Rotifers:
(1) Exhibit adult reproductive structures in juvenile phase
(2) Are plants that can be both monoecious or dioecious
(3) Produce gametes by mitosis
(4) Are animals capable of reproducing by parthenogenesis
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