Which of the Following Observations Helped Darwin Shape His Concept

question 6

Multiple Choice

Which of the following observations helped Darwin shape his concept of descent with modification?

• A) Species diversity declines farther from the equator.
• B) Fewer species live on islands than on the nearest continents.
• C) Birds live on islands located farther from the mainland than the birds' maximum nonstop flight distance.
• D) South American temperate plants are more similar to the tropical plants of South America than to the temperate plants of Europe.

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Definitions:

Amyloplasts

Starch storage organelles found in plant cells, responsible for the synthesis and storage of starch granules.

Auxin

A class of plant hormones that play essential roles in coordinating growth and behavioral processes in the plant's life cycle, including cell elongation and division.

Thigmotropism

Plant growth in response to contact with a solid object, such as the twining of plant tendrils.

Mechanical Stimuli

Physical forces that influence biological processes in organisms, such as pressure, stretch, and flow.