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प्रश्न
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?
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उत्तर
- Degenerated or partially developed useless organs are called vestigial organs.
- Wisdom tooth, Appendix, Body hairs, Coccyx, are some vestigial organs in human body.
- Coccyx supports the tail in other animals. Body hairs protect from cold.
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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
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
Write the similarity between the wing of a butterfly and the wing of a bat. What do you infer from the above with reference to evolution?
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
Explain the terms analogous and homologous organs with examples.
The organs which perform different functions but have the same basic structure are known as :
(a) homologous organs
(b) analogous organs
(c) homolytic organs
(d) analytic organs
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
Explain with suitable examples importance of anatomical evidence in evolution.
Choose the correct option of the following question:
Wings of Insect and Birds are examples of :
Find an odd one out.
Appendix : vestigial organ : : Peripatus : ____________
The decaying process of C-14 occurs continuously in dead organisms only.
Explain any five types of evidence that support the theory of evolution.
The degenerated and non-functional organs found in an organism are called ______.
Define vestigial organs.
Cucurbits do not develop thick and woody stem as they are:
Write down the difference between homologous and analogous organs.
Find the odd one out:
Complete the following conceptual picture:
Write names of some vestigial organs in the human body.
