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प्रश्न
Find an odd one out.
पर्याय
Position of eyes
structure of bones of hand
structure of nostrils
structure of ear pinna
उत्तर
structure of bones of hand
APPEARS IN
संबंधित प्रश्न
Mammals : _________ : : Amphibia : Fishes
Differentiate between homology and analogy. Give one example of each.
(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
Four students A, B, C and D reported the following set of organs to be homologous. Who is correct ?
(A) Wings of a bat and a butterfly
(B) Wings of a pigeon and a bat
(C) Wings of a pigeon and a butterfly
(D) Forelimbs of cow, a duck and a lizard
Give the importance of fossil in support of organic evolution
Explain with an example for the given, how the following provides evidence in favor of evolution in organisms :
Analogous organs
Explain with an example for the given, how the following provides evidence in favor of evolution in organisms :
Fossils
Name the scientists who Discovered the fossil of Australopithecus
Explain the evolution of giraffe's neck according to Lamarck's theory of evolution.
How do homologous organs help in providing evidence for organic evolution?
Human tailbone is a vestigial organ. Explain.
Differentiate between analogous and homologous structures.
Select and write analogous structures from the list given below :
1) Wings of butterfly and birds
2) Vertebrate hearts
3) Tendrils of Bougainvillea and Cucurbita
4) Tubers of sweet potato and potato
The forelimbs of a frog, a bird and a man show the same basic design (or basic structure) of bones. What name is given to such 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.
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
Explain with suitable examples importance of anatomical evidence in evolution.
Draw a labelled diagram of T.S. of a leaf showing Kranz anatomy.
What do you mean by vestigial structures? Name four vestigial organs found in man.
Choose the correct option of the following question:
Wings of Insect and Birds are examples of :
Define fossil.
Differentiate between connecting links and the missing links.
Find an odd one out.
Appendix : vestigial organ : : Peripatus : ____________
Match the following.
| Column A | Column B |
| 1) Morphological evidences | a) Tail-bone or wisdom teeth |
| 2) Paleontological evidences | b) Leaf venation |
| c) Fossils |
Complete the flowchart.
What is carbon dating?
Which evidence of evolution is shown in the given picture? Explain the importance of this evidence.
The degenerated and non-functional organs found in an organism are called ______.
The fossil remains of Archaeopteryx is a connecting link between ______
The presence of gill slits, in the embryos of all vertebrates, supports the theory of ______.
How do we compute the age of a living tree?
Complete the following diagram:
Industrial melanism was highlighted by ______.
Give examples of homologous organs and analogous organs in plants.
