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प्रश्न
Find odd one out:
विकल्प
Tail bone
wisdom teeth
ear pinna
appendix
heart
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उत्तर
heart
Explanation:
Rest other organs are degenerated or underdeveloped, useless organs of organisms which are known as vestigial organs.
APPEARS IN
संबंधित प्रश्न
(a) Select the analogous structures from the combination given below:
(i) Forelimbs of whales and bats
(ii) Eyes of octopus and mammals
(iii) Tuber of sweet potato and potato
(iv) Tuber of Bougainvillea and tendrils of Cucurbita
(b) State the kind of evolution they represent
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?
State a reason for the increased population of dark coloured moths coinciding with the loss of lichens (on tree barks) during industrialization period in England.
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
Find out from newspapers and popular science articles any new fossil discoveries or controversies about evolution.
Wing of an insect and forelimb of a bird are :
(a) analogous organs
(b) analeptic organs
(c) homologous
(d) homophobic 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 a short note based on the information known to you.
Connecting link
Observe the picture and answer the following questions.
A) Which evidence of evolution is shown in the picture?
B) What can be proven with this proof?
C) Give one more example of evidence of evolution
Explain any three molecular (genetic) evidences in favour of organic evolution.
Find an odd one out.
Find an odd one out.
Appendix : vestigial organ : : Peripatus : ____________
Where is carbon dating used?
Define vestigial organs.
What were the characteristics of life forms that had been fossilised?
The evolutionary story of moths in England during industrialisation reveals, that 'evolution is apparently reversible'. Clarify this statement.
Explain divergent evolution in detail. What is the driving force behind it?
Pick the odd man out:
