LIFE SCIENCE

OBJECTIVE LIFE SCIENCE

EVOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is the best example of a homologous structure?
A
Wings of butterflies and bats
B
Flipper of a whale and wing of a bat
C
Limb bones in snakes
D
Fins of fish and penguins
Explanation: 

Detailed explanation-1: -Homologous organs are those that have similar internal structure but perform different functions. Wings of a bat, flippers of whale and limbs of human beings are all homologous to each other as they have a common origin, hence similar internal structure (bones that comprise them).

Detailed explanation-2: -When two or more organs or structures are basically similar to each other in construction but are modified to perform different functions, they are said to be serially homologous. An example of this is a bat’s wing and a whale’s flipper.

Detailed explanation-3: -Flippers of whales and wings of birds considered as homologous organs because they both have the same anatomy, i.e., they have same skeletal structures, and they perform different functions. Flippers of whales are used to swim whereas the wings of birds are used for flight.

Detailed explanation-4: -A great example of homologous structures are the wings of a bat and the arms of a human. Bats and humans are both mammals, so they share a common ancestry. Both a bat’s wing and a human’s arm share a similar internal bone structure, even though they look very different externally.

Detailed explanation-5: -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.

There is 1 question to complete.