Question

When spores spread and land in a suitable place, what forms?

Answer 1

Spore after falling on suitable place germinates into a new plant that is usually a gametophyte.

Explanation:

Spores are of two types, i.e. mitospores and meiospores.

• Mitospores are formed by mitotic division, whereas meiospores are formed by meiotic division.

In lower plants like Algae and Fungi, both types of spores are produced. In higher plants like Bryophytes, Pteridophytes, and Spermatophytes, the life cycle is completed in 2 generations. These are sporophytic and gametophytic generations.

• Sporophytes are diploid and produce meiospores by meiosis. These meiospores, after falling on a suitable substrate, germinate to form gametophytic generation, which is haploid.

Haploid gametophytic generation reproduces by gametes, which fuse to form a diploid zygote. The zygote germinates to produce a sporophyte.

These two generations alternate with each other. This phenomenon is called alternation of generations.