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