Green Algae Differ from Land Plants in That Many Green

Question

Green algae differ from land plants in that many green algae
A) are heterotrophs.
B) are unicellular.
C) have plastids.
D) have alternation of generations.
E) have cell walls containing cellulose.

Accepted Answer

While some green algae may form multicellular colonies, the majority are unicellular. This distinguishes them from most land plants, which are multicellular.

Answer: C
 Like land plants, green algae have plastids, which are organelles that perform photosynthesis. In fact, it is believed that land plants evolved from a type of green algae.

Answer: D
 While some species of green algae have life cycles with both sexual and asexual phases, they do not have a complete alternation of generations like land plants do.

Answer: E
 Green algae (like most algae) have cell walls made of cellulose, but the specific composition and structure of their walls may be different than those of land plants.