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प्रश्न
Answer the following question.
Wisdom teeth : Vestigial organs :: Lungfish : ....................
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उत्तर
Wisdom teeth : Vestigial organs :: Lungfish : Connecting links
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संबंधित प्रश्न
Which of the following pairs of two vegetables represent the correct homologous structures?
(A) Sweet potato and potato
(B) Sweet potato and tomato
(C) Carrot and potato
(D) Radish and carrot
Explain the evolution of giraffe's neck according to Lamarck's theory of evolution.
The organs which perform similar functions but have different basic structure are called :
(a) asymmetric organs
(b) analogous organs
(c) homologous organs
(d) homophonic organs
There are five animals A, B, C, D and E. The animal A uses its modified forelimbs for flying. The animal B uses its forelimbs for running whereas the animal C uses its forelimbs for grasping. The animal D can live on land as well as in water and uses its forelimbs to prop up the front end of its body when at rest. The animal E which respires by using spiracles and tracheae uses wings for flying but its wings are analogous to the modified forelimbs of animal A.
(a) What could the animals A, B, C, D and E be?
(b) Why are the forelimbs of animals A, B, C, D called homologous organs?
(c) What does the existence of homologous organs in animals A, B, C and D tell us about their ancestors ?
(d) Why are the modified forelimbs of animal A and the wings of animal E called analogous organs?
(e) State whether animals A and E have a common ancestor or not.
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
Write the names of those animals in whom some vestigial organs in human body are functioning.
The most common types of fossils are ------------------------.
Define fossil.
Define phylogeny.
Long answer question.
Would you consider wings of butterfly and bat as homologous or analogous and why?
Write the answers to the questions by observing the figure below.
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 |
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| (a) | (b) | (c) |
- Write the name of the animal ‘(a)’ in the figure.
- Write the name of the animal ‘(b)’ in the figure.
- Write the name of the animal ‘(c)’ in the figure.
- Which evolutionary evidence is illustrated by this figure?
- Write the definition of that evidence for evolution.
Which of these is not a vestigial organ in human beings?
Palaeontological evidence for evolution refers to the ______.
Analogous organs arise due to ______.
Find odd one out:
Explain natural selection with the example of industrial melanism.
Define the term:
Homologous organs
Give one example of homologous organs found in plants.
Pick the odd man out:
Write names of some vestigial organs in the human body.
