Answer :
Answer:
Homologous organs can be described as structures having the same internal organization.
The forelimbs of many vertebrates have the same arrangement of bones. Some of these vertebrates having similar organisation of forelimbs are bird wings, bat wings, flippers, and human arms and legs.
Although the function of these limbs yet they have similar internal organisation.
A bird's wing helps the bird in flying. Bat wing helps the bat to fly. Human arm and legs are used for movement. Flippers help in movement in water.
The physically alike but functionally diverse structures that share a common predecessor are called homologous structures. The forelimbs are an example of a homologous structure.
The function of forelimbs differs in the organism as:
- Birds have wings that they use to fly and have similar anatomical structures as that of limbs.
- Bats also have wings that are physically similar but help them to fly and disperse heat.
- Humans have arms and legs that are physically similar to forelimbs structure but used differently like hands are used to eat, write, exercise while leg helps in locomotion.
- Seals have flippers that help them to move in the water.
Thus, forelimbs differs in function.
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