The major difference between angiosperms and gymnosperms comes from the

Reproductive structures and seeds.

Explanation:

In angiosperms, the reproductive structures are flowers and seeds are contained in a dispersal structure (ovary) that then becomes a fruit. On the other hand, gymnosperms have naked seeds which are not contained in a fruit. Also, angiosperms develop flowers while gymnosperms don't.

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answer: collecting information/data

reason: the student is going around and asking people questions to collect data

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