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प्रश्न
Find an odd one out.
पर्याय
Human hand
flipper of whale
cat’s foreleg
wings of birds
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उत्तर
wings of birds
APPEARS IN
संबंधित प्रश्न
Mammals : _________ : : Amphibia : Fishes
State the connecting links between Peripatus with Annelida and Arthopoda.
What are vestigial organs?
(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
Differentiate between analogy and homology giving one example each of plant and animal respectively.
How analogy and homology considered as an evidence in support of evolution ?
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
Attempt giving a clear definition of the term species.
Enlist any four sequential evolutionary names of human ancestors.
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
How do homologous organs help in providing evidence for organic evolution?
Human tailbone is a vestigial organ. Explain.
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
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
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
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.
Write short notes based upon the information known to you.
Embryology
Answer the following question.
Wisdom teeth : Vestigial organs :: Lungfish : ....................
The most common types of fossils are ------------------------.
Similarities in the initial stages indicate the _______ evidence.
Match the following.
| Column A | Column B |
| 1) Morphological evidences | a) Tail-bone or wisdom teeth |
| 2) Paleontological evidences | b) Leaf venation |
| c) Fossils |
Which evidence of evolution is shown in the given picture? Explain the importance of this evidence.
Write the answers to the questions by observing the figure below.
 |
 |
 |
| (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.
A human hand, a front leg of a cat, a front flipper of a whale and a bat’s wing look dissimilar and adapted for different functions. What is the name given to these organs?
Select vestigial organs from the following.
Homologous organs and vestigial organs are examples of ______ type of evidence in evolution.
Why do all the gametes formed in human females have an X chromosome?
Flippers of Penguins and Dolphins are examples of:
The study of fossil evidence of evolution is called ______
Analogous organs arise due to ______.
Did aquatic life forms get fossilised? If, yes where do we come across such fossils?
While creation and presence of variation is directionless, natural selection is directional as it is in the context of adaptation. Comment.
Write a note on the significance of Palaeontology.
Define the term:
Homologous organs
Complete the following conceptual picture:
Pick the odd man out:
