Question

The process of formation of gametophytes directly from sporophytes without meiosis is known as-

• A. Apogamy
• B. Apospory
• C. Amphimixis
• D. Parthenogenesis

Answer 1

The correct option is B

Apospory

The correct option is B.

Explanation for the correct option:

1. Apospory is a type of asexual reproduction process in plants.
2. Apospory is the development of a diploid gametophyte from the vegetative cells of a sporophyte without the need for spore formation or meiosis.
3. In this process, the formation of gametophytes is not required for the formation of gametes.

Explanation for the incorrect options:

Option A:

1. Apogamy is an asexual reproduction technique in which the gametophyte originates from the sporophyte in plants.
2. In this process, the formation of an embryo does not require the process of fertilization.

Option C:

1. Amphimixis is a kind of sexual reproduction in which the pronuclei of two distinct gametes, namely the male and female gametes, fuse to form a zygote.

Option D:

1. Parthenogenesis is a sort of asexual reproduction in which female gametes develop without being fertilized.
2. Some species such as ants, wasps, and bees have no sex chromosomes.
3. Parthenogenesis is the process through which these organisms reproduce.
4. A few plants, reptiles, and fish may reproduce in this manner as well.

Final answer: The process of formation of gametophytes directly from sporophytes without meiosis is known as apospory.