Question

question 64
the \cambrian explosion\ refers to:
a the origination of life
b the development of the first true cell
c the appearance of fossils for all major phyla of animals
d none of the above are correct
e the mass extinction of dinosaurs

Explanation:

• Option A: Life originated much earlier than the Cambrian period, so A is incorrect.
• Option B: The first true cells (prokaryotes) developed long before the Cambrian, so B is incorrect.
• Option C: The Cambrian explosion is known for the rapid appearance of fossils representing most major animal phyla in the fossil record, so C is correct.
• Option D: Since C is correct, D is incorrect.
• Option E: Dinosaur mass extinction was the Cretaceous - Paleogene extinction, not Cambrian, so E is incorrect.

Answer:

C. The appearance of fossils for all major phyla of animals