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Give the name of the flatworm which was ...

Give the name of the flatworm which was the first to possess the eyes. State in which form and what it detects.

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A flatworm named Planaria posseses very simple eyes.That are in form of eyespots which detect light.
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KUMAR PRAKASHAN-HEREDITY AND EVOLUTION-OBJECTIVE QUESTIONS AND ANSWERS
  1. Choose the one term from the following, which includes the other three...

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  2. Whether pea plant is a self - pollinated plant or a cross pollinated o...

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  3. Give the name of the flatworm which was the first to possess the eyes....

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  4. State the probability of birth of offspring as a son or a daughter.

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  5. How do X and Y chromosomes differ ?

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  6. Which character indicates that the birds are closely related to Dinosa...

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  7. Which evidences in the field of biology are considered to be the ancie...

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  8. How do we know that extinct species ever existed ?

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  9. For what purpose is the study of fossils important ?

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  10. Give an example of homologous and analogous organs using same animals.

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  11. Evidences from which types of organs do not suggest any common ancesto...

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  12. Do all variations in a species have equal chances of surviving in the ...

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  13. Who forms the basis for evolutionary processes ?

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  14. What is earlobe ? Which are dominant and recessive variants respective...

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  15. According to Mendel's experiment, the tall plants in F(1) generation w...

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  16. How do germ cells make a single set of genes from the normal two copie...

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  17. Can asexually reproducing organisms follow similar rules of inheritanc...

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  18. Do tailless mice have tailless progeny ? Why or why not ?

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  19. Explain the word: Micro-evolution

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  20. What is called when two populations of a species cannot reproduce with...

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