Question

Consider the following data: (a) Most ancient eukaryotes are unicellular. (b) All eukaryotes alive today have a nucleus and cytoskeleton. (c) Most ancient eukaryotes lack a cell wall. Which of the following conclusions could reasonably follow from these data?
A) The first eukaryote was anaerobic.
B) The first eukaryote was very similar to a plant cell.
C) The first eukaryote was photosynthetic.
D) The first eukaryote was capable of phagocytosis.

Answer 1

Answer:

The answer would be D) The first eukaryote was capable of phagocytosis.

Explanation:

The lack of cell wall would facilitate the phagocytosis of other organisms, and therefore also the incorporation of these new organisms as new organelles (endosymbiotic theory), also the fact that most ancient eukaryotes are unicellular supports the idea of phagocytosis, due to the fact that this process is usually considered for unicellular organisms.