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Q. No.Plants like Elm (Ulmus), Dandelion (Taraxacum) and members of Rose Family vegetatively reproduce by
(1) Rhizome
(2) Sucker
(3) Stolon
(4) Corm
Difficulty Level:
The vegetative propagule of Bryophyllum is:
1. Bulbil
2. Leaf buds
3. Rhizome
4. Offset
Difficulty Level:
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
Difficulty Level:
Isogametes are seen in:
1. Cladophora
2. Fucus
3. Human beings
4. Ficus
Difficulty Level:
The number of chromosomes in a meiocyte of the fruit fly is:
(1) 4
(2) 8
(3) 12
(4) 16
Difficulty Level:
The most critical event in sexual reproduction is:
(1) Gametogenesis
(2) Gamete transfer
(3) Fertilization
(4) Embryogenesis
Difficulty Level:
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
Difficulty Level:
Ginger is vegetatively propagated through:
1. Rhizome
2. Bulbil
3. Stolon
4. Offset
Difficulty Level:
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
Difficulty Level:
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
Difficulty Level:
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