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