Which of the following is NOT one of the three hypotheses explaining the Cambira

Question

Which of the following is NOT one of the three hypotheses explaining the Cambiran explosion of animal diveristy (535-525 million years ago)? (select one)

a. The origin of predators that can move fast and capture large prey.

b. Increase of oxygen levelin the atmosphere, supporting organism with large body size.

c. The evolution of master developmental genes, where minor mutations can cause great changes in the body plan.

d. Colonization of land, opening up an entire new ecosystem with multiple ecological niches to be filed.

Explanation / Answer

d)Colonization of land, opening up an entire new ecosystem with multiple ecological niches to be filed.

IN Post Cambrian Period: During ordovician period which followed cambrian period, life of plants first started on land. Continuous changes in temperature and moisture led to create new niches that contribute to rapid speciation and increased diversity.

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