Question

multiple choice question
the origin of chloroplasts is included in which theory?
energy - conservation hypothesis
endosymbiotic hypothesis
rna world
germ theory of disease
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Explanation:

The endosymbiotic hypothesis explains that chloroplasts (and mitochondria) originated from free-living prokaryotic organisms that were engulfed by a host cell and evolved into organelles. The other options do not address chloroplast origins: the energy-conservation hypothesis relates to cellular energy mechanisms, the RNA world theory focuses on early genetic molecules, and germ theory explains disease causation by pathogens.

Answer:

B. Endosymbiotic hypothesis