BIO NMDCAT Concept of Evolution

nmdcat.online July 14, 2026

25. Which event most likely occurred immediately after the accumulation of simple organic molecules in the primordial oceans?

A. Evolution of multicellular organisms

B. Formation of protocells through molecular aggregation

✓

C. Development of flowering plants

D. Appearance of vertebrates

📝 Explanation

Correct: Organic molecules aggregated into membrane-bound structures before true cells evolved. A, C, D: These occurred much later in evolution. Concept: Sequence of origin of life.

📖 Additional Information

Evolution of multicellular organisms
Formation of protocells through molecular aggregation
Development of flowering plants
Appearance of vertebrates

Correct: Organic molecules aggregated into membrane-bound structures before true cells evolved. A, C, D: These occurred much later in evolution. Concept: Sequence of origin of life.

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