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प्रश्न
Define the evidence of evolution shown in the figure.
उत्तर
The evidence of evolution indicated in the given diagram is vestigial organ.
Vestigial organs: Vestigial organs are useless organs that are degenerated or underdeveloped due to non-functionality through several years.
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संबंधित प्रश्न
Explain with an example for the given, how the following provides evidence in favor of evolution in organisms :
Homologous organs
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
If you are asked to select a group of two vegetables, out of the following, having homologous structures which one would you select?
(a) Carrot and radish
(b) Potato and sweet potato
(c) Potato and tomato
(d) Lady finger and potato
Which of the following is a correct set of homologous organs?
(a) Forelimbs of frog, bird and lizard
(b) Spine of cactus and thorn of bougainvillea
(c) Wings of bat and wings of butterfly
(d) Wings of a bird and wings of a bat
Which one of the following pairs of vegetables is an example of homologous structures?
(A) Potato and sweet potato
(B) Carrot and radish
(C) Carrot and tomato
(D) Tomato and radish
An example of homologous organs is
Find out from newspapers and popular science articles any new fossil discoveries or controversies about evolution.
One pair of organs in the following animals are not homologous. This is :
(a) forelimbs in humans and lizard
(b) forelimbs in lizard and frog
(c) wings in butterfly and bat
(d) wings in bat and bird
Identify the following pairs as homologous and analogous organs:
(i) Sweet potato and potato
(ii) Eye of octopus and eye of mammals
(iii) Thorns of Bougainvillaea and tendrils of Cucurbits
(iv) Fore limbs of bat and whale
Select a set of homologous organs from the following:
(A) Wings of a bat and wings of a butterfly
(B) Wings of a pigeon and wings of a bat
(C) Wings of a butterfly and wings of a pigeon
(D) Forelimbs of a duck, forelimbs of a cow and forelimbs of a lizard
What do we call the degenerated or partially developed useless organs in living organisms? Enlist such organs in human body? How the same organs are useful in other animals?
Write short notes based upon the information known to you.
Embryology
Explain with suitable examples importance of anatomical evidence in evolution.
Answer the following question.
Wisdom teeth : Vestigial organs :: Lungfish : ....................
Complete the following chart:
“Appearance of melanised moths post-industrialisation in England is a classic example of evolution by natural selection.” Explain.
Define fossil.
Differentiate between connecting links and the missing links.
I am a connecting link between reptiles and mammals. Who am I?
What is carbon dating?
Observe the given images and answer the following questions.
- Which evolutionary evidence does it indicate?
- What does it prove?
- State another example of evolutionary evidence.
A human hand, a front leg of a cat, a front flipper of a whale and a bat’s wing look dissimilar and adapted for different functions. What is the name given to these organs?
Which of these is not a vestigial organ in human beings?
The fossil remains of Archaeopteryx is a connecting link between ______
Where is carbon dating used?
Evolution has exhibited a greater stability of molecular structure when compared with morphological structures. Comment on the statement and justify your opinion.
Cucurbits do not develop thick and woody stem as they are:
Palaeontological evidence for evolution refers to the ______.
Which of the following is used as an atmospheric pollution indicator?
Fossils are generally found in ______.
Did aquatic life forms get fossilised? If, yes where do we come across such fossils?
Give an example for convergent evolution and identify the features towards which they are converging.
What is the function of the appendix of our digestive system?
Define the term:
Homologous organs
Complete the following conceptual picture:
Give a definition of Palaeontology.
