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प्रश्न
A population of red beetles lives in green bushes in a garden. Once during the process of breeding, a green beetle is produced.
(a) State whether the change in colour of beetle is a process of evolution or not.
(b) Can the new colour of green beetle be passed on to its next generations?
(c) What will be the advantage (if any) of the green colour to the beetle?
(d) State whether the production of green colour involved a change in genetic material or not.
उत्तर
(a) It is a process of evolution.
(b) The green colour of the beetle is an inherited trait, which can be passed on to the next generation.
(c) It helps in survival of green beetle as it can mixing with green bushes, and hide from predators.
(d) The production of green colour has been brought about by a change in the DNA of the reproductive cells.
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संबंधित प्रश्न
According to scientists, aves have evolved from :
(a) mammals
(b) amphibians
(c) reptiles
(d) arthropods
Out of the wing of a bird, wing of an insect and the wing of a bat :
which two are analogous organs?
State the meaning of inherited traits and acquired traits. Which of the two is not passes on the next generation? Explain with the help of an example.
Read the following statement and justify same in your own words with the help of suitable example.
Human evolution began approximately 7 crore years ago.
Write short notes based upon the information known to you.
Evolution
Explain the following :
(a) Speciation
(b) Natural Selection
____________ results in variation in gene frequencies within population by chance rather than by natural selection.
Evolution occurs as a result of mutations in ______.
The idea of mutation was brought forth by:
Which fossil animal is considered as the connecting link between reptiles and birds? Give any one character of each class found in it.
