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lesson pretestMultiple Choice

Pretest

Question 1 • TPS EdX Biology

Orchids are a recently evolved plant that have a novel feature known as aerial roots. What is the most likely function of an orchid's specialized roots?

Answer
A
Aerial roots allow the orchid to attach itself to trees.
B
Aerial roots are the site of energy synthesis.
C
Aerial roots produce food for the orchid through photosynthesis.
D
Aerial roots anchor the orchid to the ground.

Explanation

Many orchids grow on trees rather than in the ground. Their aerial roots help them cling to the tree and absorb moisture from the air, so the best choice is “Aerial roots allow the orchid to attach itself to trees.”

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