According to the theory of endosymbiosis, which organelles evolved from small prokaryotes that established residence within other, larger prokaryotes?

Which structure is found in angiosperms but not gymnosperms?

In angiosperms, pollen grains develop in the ________ and land on the ________.

You are given an unknown organism to identify. It is unicellular and heterotrophic. It is motile, using many short extensions of the cytoplasm. It has well-developed organelles and two nuclei, one large and one small. This organism is most likely to be a ________.

What is this organism?

The following figure from your text shows a simplified eukaryote phylogeny. From this figure, answer the following questions. Which stage of the life cycle of Ulva shown is the sporophyte?

Many species of which protist group have modified mitochondria that lack functional electron transport chains?

Which part of the life cycle does a pollen grain represent?

______ are seedless vascular plants.

A gelatinous seaweed that grows in shallow, cold water and undergoes heteromorphic alternation of generations is most probably what type of alga?