Question

Homologous organs are:

• A. Similar in structure and same in functions
• B. Similar in structure and different in functions
• C. Different in structure and same in function
• D. Similar in structure and have same or different functions

Answer 1

The Correct Option is B

Homologous organs are anatomical structures found in different species that share a common evolutionary origin. Despite their structural similarity, these organs often perform different functions in each species. This concept is a core principle in evolutionary biology, suggesting a shared ancestor among the species possessing homologous structures. 

To identify homologous organs, consider the following characteristics:

• They have a similar anatomical configuration, reflecting a common evolutionary heritage.
• Their functions may differ across species, adapting to diverse environmental challenges or tasks.
• Examples include the wings of bats and the forelimbs of mammals, which are similar in structure but serve different purposes.

In conclusion, among the given options, homologous organs are best described as similar in structure and different in functions, indicating a shared ancestry but diverse functional evolution.

Answer 2

Homologous organs are organs that have similar structures but may have different functions. These organs share a common evolutionary origin, even though they may serve different purposes in different species. For example, the forelimbs of humans, bats, and whales are structurally similar but have different functions—human arms, bat wings, and whale flippers serve different roles despite having similar bone structures.

Thus, the correct answer is: (2) Similar in structure and different in functions.