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How were farmers able to obtain present ...

How were farmers able to obtain present day cabbage, cauliflower and broccoli from wild cabbage?

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During breeding, farmers selected for a very short distance between leaves among the wild cabbage plants and grew the cabbage we eat.
Selecting the features of arrested flower led to the development of broccoli.
On the other hand, cauliflower was bred by selecting sterile flowers.
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OSWAAL PUBLICATION-HEREDITY AND EVOLUTION-TOPIC - 2 (ORIGIN OF LIFE AND EVOLUTION)(SHORT ANSWER TYPE QUESTIONS - II)
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  2. What is speciation? Explain in brief the role of natural selection and...

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  3. Explain the terms (i) Speciation (ii) Natural selection

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  4. Define the following with one example for each : (i) Genetic Drift. ...

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  5. Name three organisms which are fossilized.

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  6. (i) Which of the following fossils is invertebrate and which one is ve...

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  7. Give two uses of fossils. How does the study of fossils provide eviden...

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  8. When organisms die, their bodies will decompose and be lost. Then how ...

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  9. How were farmers able to obtain present day cabbage, cauliflower and b...

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  10. "Evolution should not be equated with progress". Why?

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  11. List three factors that provide evidences in favour of evolution in or...

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  12. Homologous organs are different form analogous organs. (i) Mention t...

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  13. There are two different types of organs, homologous and analogous. Dif...

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  14. All human races like Africans, Asians, Europeans, Americans and others...

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  15. List three factors that provide evidences in favour of evolution in or...

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  16. (i) Planaria, insects, octopus and vertebrates all have eyes. Can we g...

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  17. "It is a matter of chance whether a couple will have a male or a femal...

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  18. (a) Cite the evidence on the basis of which it is concluded that birds...

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  19. The modern human beings have originated in Africa. (i) Which evidenc...

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  20. (i) A husband has 46 chromosomes, his wife has 46 chromosomes. Then wh...

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