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प्रश्न
______ is a vestigial organ in human beings.
पर्याय
Wisdom teeth
Ear muscles
Body hairs
All the above
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उत्तर
All the above
Explanation:
All the given options are vestigial organs/structures in human beings:
- Wisdom teeth – no longer needed for chewing tough food.
- Ear muscles – humans cannot move their ears like some animals.
- Body hairs – reduced in function compared to early humans.
APPEARS IN
संबंधित प्रश्न
State the connecting links between Peripatus with Annelida and Arthopoda.
Differentiate between homology and analogy. Give one example of each.
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?
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
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
Enlist any four sequential evolutionary names of human ancestors.
Give the importance of fossil in support of organic evolution
Explain the evolution of giraffe's neck according to Lamarck's theory of evolution.
Name any two temporary embryonic structures in vertebrates which provide evidence for evolution.
How do homologous organs help in providing evidence for organic evolution?
Differentiate between analogous and homologous structures.
Name two animals having homologous organs and two having analogous organs. Name these organs.
Wing of an insect and forelimb of a bird are :
(a) analogous organs
(b) analeptic organs
(c) homologous
(d) homophobic organs
X, Y, and Z are three animals. The animal X can fly but animal Y can only run on ground or walls. The forelimbs of animals X and Y have the same basic design but they are used for different purposes such as flying and running respectively. The animal Z became extinct an long time ago. The study of fossils of Z tells us that it had some features like those of X and some like those of Y. In fact, Z is said to form a connecting link in the evolutionary chain of X and Y.
(a) What could the animals X, Y and Z be?
(b) What name is given to the forelimbs like those of X and Y which have the same basic design but different functions?
(c) Name one feature in which Z resembled X.
(d) Name one feature in which Z resembled Y.
(e) Which is the correct evolutionary chain involving X, Y and Z : X → Z → Y or Y → Z → X?
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.
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
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?
Read the following statement and justify same in your own words with the help of suitable example.
There is evidences of fatal science among chordates.
_______ is a connecting link between Annelida and Arthropoda.
Choose the correct option of the following question:
Wings of Insect and Birds are examples of :
Differentiate between connecting links and the missing links.
Appendix : vestigial organ : : Peripatus : ____________
Homologous organs and vestigial organs are examples of ______ type of evidence in evolution.
Evolution has exhibited a greater stability of molecular structure when compared with morphological structures. Comment on the statement and justify your opinion.
Homologous organs are:
The process of mating of individuals, which are more closing related than the average of the population to which they belong is called ______.
The bones of forelimbs of whale, bat, cheetah and man are similar in structure, because ______.
Fossils are generally found in ______.
Give an example for convergent evolution and identify the features towards which they are converging.
I am the connecting link of annelida and arthropoda. What is my name?
Explain natural selection with the example of industrial melanism.
Write a note on the significance of Palaeontology.
Define Palaeontology.
