A Maple Tree's Seeds Occur in Pairs That Are Enclosed

question 13

Multiple Choice

A maple tree's seeds occur in pairs that are enclosed and attached to flat "wings" that are made of a papery tissue. The wings' shape allows them to spin in the air as they fall from the tree; this unusual motion has earned them the nickname "helicopter seeds." Maple tree seeds are most successful when they are dispersed by

• A) wind.
• B) water.
• C) mammals.
• D) birds.

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Definitions:

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