Plants like Elm (Ulmus), Dandelion (Taraxacum) and members of Rose Family vegetatively reproduce by
(1) Rhizome
(2) Sucker
(3) Stolon
(4) Corm
The vegetative propagule of Bryophyllum is:
1. Bulbil
2. Leaf buds
3. Rhizome
4. Offset
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
Isogametes are seen in:
1. Cladophora
2. Fucus
3. Human beings
4. Ficus
When both male and female flowers are present on the same plant, then plant is said to be:
1. Bisexual
2. Monoecious
3. Unisexual
4. Dioecious
The number of chromosomes in a meiocyte of the fruit fly is:
(1) 4
(2) 8
(3) 12
(4) 16
The most critical event in sexual reproduction is:
(1) Gametogenesis
(2) Gamete transfer
(3) Fertilization
(4) Embryogenesis
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
Ginger is vegetatively propagated through:
1. Rhizome
2. Bulbil
3. Stolon
4. Offset
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