Look at the tree below. The figure represents the evolutionary history of rabbit

Question

Look at the tree below.

The figure represents the evolutionary history of rabbits, hares, and rodents. Key: RH=rabbits & hares, MS=marmots & squirrels, C=cavies, B=beavers, RM=rats & mice.

Which of the following is a valid interpretation of the tree?

A. All marmots and squirrels are descended from a species of rabbit that is still alive today.

B. There are more species of rabbits & hares alive today than there were in the past.

C. The overall number of species in this tree is higher today than at any time in the past.

D. There are currently more species of marmots and squirrels alive than any other group in the tree.

E. Diversity decreases only when there is a widespread extinction event that influences all animals in the tree.

Explanation / Answer

Asnwer-E). Diversity decreases only when there is a widespread extinction event that influences all animals in the tree

Description-Extinction event in the history of life and caused widespread changes in the global distribution of organisms. These changes in biodiversity alter ecosystem processes and change the resilience of ecosystems to environmental change.

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