LIFE SCIENCE

OBJECTIVE LIFE SCIENCE

EVOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A group of students researching flying animals concluded that birds and bats must be closely related, evolutionarily speaking, since they both had wings and could fly.Is this a reasonable conclusion?
A
No. Birds and bats are only distantly related with wings that are analogous structures evolved for the common purpose of flight.
B
No. Birds and bats share no evolutionary common ancestor because they evolved on separate continents millions of years apart.
C
Yes. Birds and bats are closely related with wings that are homologous structures that only evolve in close evolutionary relatives.
D
Yes. Birds and bats are closely related because they are both mammals that share a recent common ancestor that evolved in Africa.
Explanation: 

Detailed explanation-1: -No. Birds and bats are only distantly related with wings that are analogous structures evolved for the common purpose of flight.

Detailed explanation-2: -Sometimes it is unclear whether similarities in structure in different organisms are analogous or homologous. An example of this is the wings of bats and birds. These structures are homologous in that they are in both cases modifications of the forelimb bone structure of early reptiles.

Detailed explanation-3: -Bird and bat wings are analogous-that is, they have separate evolutionary origins, but are superficially similar because they have both experienced natural selection that shaped them to play a key role in flight.

Detailed explanation-4: -Convergent evolution: Convergent evolution occurs when two organisms that lack a recent common ancestor end up more and more alike as they adapt to a similar ecological niche. The organisms have convergent phenotypes, and their similar structural forms are called analogous structures (such as bird wings and bat wings).

There is 1 question to complete.