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

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

With respect to external fertilization, which of the following is not an advantage of internal fertilization?

1. A decreased risk of disease transmission

2. Minimal waste of gametes

3. Greater chances of individual egg fertilization

4. Relatively longer time of egg protection

Match Column I with column II and select the correct option using the codes given below:

Codes:

Which one of the following statements is not correct?

(1) Offspring produced by the asexual reproduction are called clone

(2) Microscopic, motile asexual reproductive structures are called zoospores

(3) In potato, banana and ginger, the plantlets arise from the internodes present in the modified stem.

(4) Water hyacinth, growing in the standing water, drains oxygen from water that leads to death of fishes. 

Which one of the following generates new genetic combinations leading to variation?

(1) Vegetative reproduction

(2) Parthenogenesis

(3) Sexual reproduction

(4) Nucellar polyembryony

Which one of the following is wrong about Chara?

(1) Upper oogonium, and lower round anthredium

(2) Globule and nucule present on the same plant

(3) Upper anthredium and lower oogonium

(4) Globule is male reproductive structure

The 'Eyes' of the potato tuber are 

(1) flower buds

(2) shoot buds

(3) axillary buds

(4) root buds

Product of sexual reproduction generally generates

(1) longer viability of seeds

(2) prolonged dormancy

(3) new genetic combination leading to variation

(4) large biomass