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Type: Multiple-Choice
Category: Evolution
Level: Grade 9
Score: 1
Author: JVance
Last Modified: 9 months ago

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Evolution Question

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Grade 9 Evolution

Fish, frogs, birds, and monkeys all have an embryonic stage in which structures called pharyngeal slits appear on the sides of the throat. In fish, these slits develop into gills, but in frogs, birds, and monkeys, these slits develop into other structures.

Based on this information, which is the best conclusion about the evolutionary histories of fish, frogs, birds, and monkeys?
  1. The animals evolved from a common ancestor.
  2. The animals did not develop lungs for breathing.
  3. The animals are not adapted to eat the same kinds of food.
  4. The animals have evolved similar developmental rates from fertilization to birth.
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