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प्रश्न
Write the names of those animals in whom some vestigial organs in human body are functioning.
Write name of those animals in which these vestigial organs are functional.
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उत्तर
- It is useful in monkeys and other animals, such as rabbits, cows, and horses, for the movement of the ear pinna.
- Appendix is fully functional in ruminants for the digestion of cellulose.
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
How analogy and homology considered as an evidence in support of evolution ?
Which one of the following pairs of vegetables is an example of homologous structures?
(A) Potato and sweet potato
(B) Carrot and radish
(C) Carrot and tomato
(D) Tomato and radish
Can the wing of a butterfly and the wing of a bat be considered homologous organs? Why or why not?
Explain the terms analogous and homologous organs with examples.
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
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?
Name two animals having homologous organs and two having analogous organs. Name these organs.
Out of bacteria, spider, fish and chimpanzee, which organism has a better body design in evolutionary terms? Give reason for your answer.
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
With the help of diagrams, describe emasculation and bagging.
Explain any three molecular (genetic) evidences in favour of organic evolution.
Find an odd one out.
Give scientific reason.
Peripatus is said to be the connecting link between Annelida and Arthropoda.
Complete the flowchart.
Define the evidence of evolution shown in the figure.
Observe the following images and answer the questions.
- Which evolutionary evidences are indicated in the given picture?
- How are they formed?
- Which method is used to measure their age or their time?
Explain any five types of evidence that support the theory of 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.
Select the CORRECT set of homologous organs.
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:
Cucurbits do not develop thick and woody stem as they are:
Study of fossils is ______.
What were the characteristics of life forms that had been fossilised?
What are we referring to? When we say 'simple organisms' or 'complex organisms'.
Explain divergent evolution in detail. What is the driving force behind it?
You have studied the story of Peppermoths in England. Had the industries been removed, what impact could it have had on the moth population? Discuss.
Complete the following diagram:
Give a scientific reason.
Morphological evidences suggest that dog, sheep and wolf have a common origin.
What is the function of the appendix of our digestive system?
Find odd one out:
Industrial melanism in England after 1850 is an excellent example of Natural selection. Explain how?
