Question

Which of the following is classified as multicellular green algae?

1.Spirogyra
2.Ulva
3.Chlamydomonas
4.None Of The Above

Answer 1

I believe, this one is tough but, none of them are multicellular green algae they are all unicellular?

Answer 2

The correct answer option 2. Ulva.

Explanation:

Ulva is a flat green multicellular alga growing from a discoid holdfast. The membrane of the Ulva is 2 cells thin, translucent, and soft and grows attached with or without small disc-shaped holdfast.

The chloroplast is cup-shaped in some cases but a parietal plate in others with 1 to 3 pyrenoids in number. There are some Ulva species that are similar and difficult to differentiate.

Thus, the correct answer is option 2. Ulva.