Question

Polysiphonia exhibits an intermediate stage in its life cycle known as :

• A. Gametophyte
• B. Sporophyte
• C. Thallophyte
• D. Carposporophyte

Answer 1

The correct option is D Carposporophyte

All algae are generally refered to as thallophytes because they do not have well defined root, stem or leaf.

During their life cycle all plants generally exhibit 2 distinct phases the haploid gametophyte phase and the diploid sporophyte phase.

Polysiphonia is a red algae. Generally all red algae exhibit oogamous type of reproduction accompanied by complex post fertilisation developments. Carposporophyte is an intermediate stage that is formed during this post fertilisation stage.