Question

pretest: organization of organisms
3
select the correct answer.
which process most likely enabled the formation of the early protists?
a. photosynthesis
b. endosymbiosis
c. conjugation
d. binary fission

Explanation:

Early protists are eukaryotes, which evolved from prokaryotes. Endosymbiosis is the theory that explains how eukaryotic cells gained organelles like mitochondria and chloroplasts by engulfing smaller prokaryotic cells, which is key to the formation of complex early protists. Photosynthesis is a energy-making process, conjugation is a bacterial sexual reproduction method, and binary fission is prokaryotic asexual reproduction, none of which directly enable the formation of early protists.

Answer:

B. endosymbiosis