Question

Eye of Octopus and eye of Cat show different patterns of structure. Yet they perform similar function. This is an example of

• A. Analogous organs that have evolved due to divergent evolution
• B. Homologous organs that have evolved due to convergent evolution
• C. Homologous organs that have evolved due to divergent evolution
• D. Analogous organs that have evolved due to convergent evolution

Answer 1

The Correct Option is D

To determine the correct answer, we need to understand the concepts of analogous and homologous structures, and the evolutionary processes of convergent and divergent evolution.

Analogous Structures: These are body parts that perform similar functions but have different evolutionary origins. They arise when different species face similar environmental challenges and selective pressures, leading to similar adaptations.

Homologous Structures: These are body parts that share a common ancestry but may serve different functions. They reflect divergent evolution from a common ancestor.

Convergent Evolution: This is when two or more unrelated species develop similar traits, often as a result of having to adapt to similar environments or ecological niches.

Divergent Evolution: This is when two species gradually become different from a common ancestor, usually due to different selective pressures in their respective environments.

The eye of an octopus and the eye of a cat perform similar functions - they both allow vision. However, the structural composition and evolutionary origins of these eyes are different, as octopuses and cats are not closely related. This means:

1. They are analogous organs because they perform similar functions but do not share a common evolutionary origin.
2. Their development is due to convergent evolution, as both evolved similar traits in response to analogous environmental pressures, but from different ancestors.

The correct answer is: Analogous organs that have evolved due to convergent evolution.