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प्रश्न
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?
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उत्तर
- Degenerated or partially developed useless organs are called vestigial organs.
- Wisdom tooth, Appendix, Body hairs, Coccyx, are some vestigial organs in human body.
- Coccyx supports the tail in other animals. Body hairs protect from cold.
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संबंधित प्रश्न
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
Which of the following is a correct set of homologous organs?
(a) Forelimbs of frog, bird and lizard
(b) Spine of cactus and thorn of bougainvillea
(c) Wings of bat and wings of butterfly
(d) Wings of a bird and wings of a bat
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
Attempt giving a clear definition of the term species.
Name two animals having homologous organs and two having analogous organs. Name these organs.
The organs which perform different functions but have the same basic structure are known as :
(a) homologous organs
(b) analogous organs
(c) homolytic organs
(d) analytic organs
The organs which perform similar functions but have different basic structure are called :
(a) asymmetric organs
(b) analogous organs
(c) homologous organs
(d) homophonic organs
Some dinosaurs had feathers although they could not fly birds have feathers that help them to fly. In the context of evolution, this means that ______
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
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
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
Answer the following question.
Wisdom teeth : Vestigial organs :: Lungfish : ....................
“Appearance of melanised moths post-industrialisation in England is a classic example of evolution by natural selection.” Explain.
Very short answer question:
What is vestigeal organ?
Long answer question.
Would you consider wings of butterfly and bat as homologous or analogous and why?
Explain the importance of Anatomical evidences with examples.
Find an odd one out.
Find an odd one out.
Give scientific reason.
Vertebrates have slowly originated from invertebrates.
Enlist the evidences of evolution.
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?
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?
Which of these is not a vestigial organ in human beings?
Define vestigial organs.
Cucurbits do not develop thick and woody stem as they are:
Study of fossils is ______.
Evolutionary convergence is the development of:
Flippers of Penguins and Dolphins are examples of:
Organs having similar functions but different origin and development are known as:
The bones of forelimbs of whale, bat, cheetah and man are similar in structure, because ______.
Analogous organs arise due to ______.
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?
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?
Define the term:
Homologous organs
Industrial melanism was highlighted by ______.
