Q. Read the following statements regarding evolution:

The Therapsids were synapsids who gave rise to mammals.

The seed ferns were the common ancestors of all gymnosperms and angiosperms.

The term saltation was given by Darwin for single-step large mutation.

The work of Thomas Malthus on populations influenced Darwin.

Choose the correct option based on the accuracy of these statements.

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Solution:

The seed ferns were common ancestor of cycads and angiosperms. The other gymnosperms are originated from Psilophytons. The term saltation was given by Hugo deVriesf or single step large mutation, which causes speciation.