LIFE SCIENCE

Detailed explanation-1: -Arm and leg of man and horse are examples of homologous organs. A homologous structure is an example of an organ or bone that appears in different animals, underlining anatomical commonalities demonstrating descent from a common ancestor.

Detailed explanation-2: -The similarities stem from evolutionary paths that are similar. As shown in the next image, the bones in the wings of bats and birds, the arms of humans, and the front leg of a horse are homologous structures. Notice that the form is not simply a single bone.

Detailed explanation-3: -An example of homologous structures are the limbs of humans, cats, whales, and bats. Regardless of whether it is an arm, leg, flipper or wing, these structures are built upon the same bone structure. Homologies are the result of divergent evolution.

Detailed explanation-4: -Clearly there is no analogous similarity between a bat’s wing and a horse’s leg, and the extreme difference in uses of the two makes the underlying similarity seem unusual. These types of similarity are called homologous, meaning they are similar in structure but not in function.

Detailed explanation-5: -Despite their dramatic differences, a human’s arm, a dog’s leg, a bird’s wing, and a whale’s flipper all are homologous. The same bones are found in each structure, they only differ in their size and shape.