Advertisements
Advertisements
Question
In a class, students were asked to observe the models/slides/pictures of the skeletons of forelimbs and wings of different organisms. After the observations the students made the following groups of homologous structures. Select the correct group :
(A) Wings of a bird and a butterfly
(B) Wings of a pigeon and a bat
(C) Wings of a butterfly and a bat
(D) Forelimbs of a cow, a duck and a lizard
Solution
Homologous organs are the organs that have a similar origin and basic structure but different functions. Forelimbs of a cow, a duck and a lizard have a similar structure but different functions.
Hence, the correct option is D.
APPEARS IN
RELATED QUESTIONS
Four students A, B, C and D reported the following set of organs to be homologous. Who is correct ?
(A) Wings of a bat and a butterfly
(B) Wings of a pigeon and a bat
(C) Wings of a pigeon and a butterfly
(D) Forelimbs of cow, a duck and a lizard
Can the wing of a butterfly and the wing of a bat be considered homologous organs? Why or why not?
Explain with an example for the given, how the following provides evidence in favor of evolution in organisms :
Analogous organs
Differentiate between analogous and homologous structures.
The organs P and Q of two animals have different structures but similar functions. On the other hand, the two organs R and S of two other animals have the same basic structure but different functions.
(a) What are the organs like P and Q known as?
(b) Name the organs like P and Q. Also name the animals which have such organs.
(c) What are the organs like R and S called?
(d) Name the organs like R and S. Also name the animals which have such organs.
Write short notes based upon the information known to you.
Connecting link
Define fossil.
The presence of gill slits, in the embryos of all vertebrates, supports the theory of ______.
Write down the difference between homologous and analogous organs.
Find the odd one out:
