Reproduction in Organisms · Question 2

In some plants, the female gamete develops into embryo without fertilization. This phenomenon is known as :

1. Syngamy
2. Parthenocarpy
3. Parthenogenesis
4. Autogamy

Offsets are produced by

1. parthenocarpy
2. parthenogenesis
3. meiotic divisions
4. mitotic divisions

Which of the following flowers only once in its lifetime?

1. Papaya
2. Bamboo species
3. Jackfruit
4. Mango

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 the 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

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

1. (a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)
2. (a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)
3. (a)-(i), (b)-(ii), (c)-(iv), (d)-(iii)
4. (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)

Which of the following pairs is not correctly matched?

1. [figure]
2. [figure]
3. [figure]
4. [figure]

In ginger, vegetative propagation occurs through

1. bulbils
2. runners
3. rhizome
4. offsets.

Meiosis takes place in

1. gemmule
2. megaspore
3. meiocyte
4. conidia.

Product of sexual reproduction generally generates

1. new genetic combination leading to variation
2. large biomass
3. longer viability of seeds
4. prolonged dormancy.