Analogous Structures Worksheet
Explore analogous structures in different organisms, understanding how similar functions can evolve from different evolutionary origins.
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Analogous Structures: Form and Function
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Read each question carefully and answer to the best of your ability. This worksheet focuses on analogous structures, which are structures in different species that have a similar function but evolved independently and do not share a common ancestor.
1. Which of the following best describes analogous structures?
Structures with similar evolutionary origin but different functions.
Structures with similar functions but different evolutionary origins.
Structures that are no longer used by an organism.
Structures found only in invertebrate animals.
2. The wings of a bird and the wings of an insect are considered analogous structures because:
They both have bones for support.
They share a common ancestor with wings.
They both enable flight but evolved independently.
They have the exact same internal structure.
3. Analogous structures are a result of evolution, where unrelated organisms evolve similar traits due to similar environmental pressures.
4. The streamlined body shapes of a dolphin and a shark are examples of structures.
5. Unlike homologous structures, analogous structures do not indicate a recent .
6. Analogous structures always have the same underlying bone structure.
True
False
7. The eyes of a human and the eyes of an octopus are considered analogous structures.
True
False
8. Provide an example of analogous structures not mentioned in this worksheet and explain why they are analogous.
9. Observe the images of the bird wing and insect wing below. Both are used for flight. In what ways are they similar in function, and how do their structures differ, making them analogous?
