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प्रश्न
What are vestigial organs?
What are vestigial organs? Give one example.
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उत्तर १
Vestigial organs are degenerated or underdeveloped organs of organisms which do not perform any function.
उत्तर २
Vestigial organs are structures which have no apparent function in a particular organism. Examples: Tailbone, wisdom teeth
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संबंधित प्रश्न
State the connecting links between Peripatus with Annelida and Arthopoda.
Study the following statements:-
I. Wings of birds and wings of bats are homologous organs.
II. Wings of birds and wings of insects are modified forelimbs.
III. Wings of birds and wings of insects are analogous organs.
IV. Wings of birds and forelimbs of horse are homologous organs.
The correct statements are
(A) I and II
(B) II and III
(C) III and IV
(D) I and IV
Four students P, Q, R and S differently reported the following set of organs to be analogous :
P. Forelimb of a frog and forelimb of a lizard
Q. Forelimb of a bird and forelimb of a human
R. Wings of a parrot and wings of a butterfly
S. Wings of a bird and wings of a bat
The two students who have reported correctly are :
(A) P and Q
(B) Q and R
(C) R and S
(D) P and S
Name any two temporary embryonic structures in vertebrates which provide evidence for evolution.
The forelimbs of a frog, a bird and a man show the same basic design (or basic structure) of bones. What name is given to such organs?
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.
You have potato, carrot, radish, sweet potato, tomato and ginger bought from the market in your jute bag. Identify two vegetables to represent the correct homologous structures.
(A) Potato and tomato
(B) Carrot and tomato
(C) Potato and sweet potato
(D) Carrot and radish
Write the names of those animals in whom some vestigial organs in human body are functioning.
_______ is a connecting link between Annelida and Arthropoda.
With the help of diagrams, describe emasculation and bagging.
Find an odd one out.
I am a connecting link between reptiles and mammals. Who am I?
Homologous organs are:
Study of fossils is ______.
Which is not a vestigial organ in a man?
Animal husbandry and plant breeding programmes are the examples of ______.
Fossils are generally found in ______.
Give an example for convergent evolution and identify the features towards which they are converging.
How do we compute the age of a fossil?
Define Palaeontology.
