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What is 'double fertilisation'? Describe...

What is 'double fertilisation'? Describe it with the help of a neat and well labelled diagram. Give its importance.

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GURUKUL PUBLICATION - MAHARASHTRA PREVIOUS YEAR PAPERS- MARCH 2014-SECTION - II (ZOOLOGY)
  1. What is 'double fertilisation'? Describe it with the help of a neat an...

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  2. The most common types of fossils are ……………

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  3. Which of the following traits is never observed in human females ?

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  4. Safety of polio vaccine is tested on transgenic ……………….

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  5. Mucous membrane trapping the microbes acts as a ………………….

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  6. Conversion of ammonia into uric acid occurs through ………………

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  7. Spinal cord and sympathetic ganglion of autonomous nervous system are ...

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  8. Pregnancy in second trimester is maintained by ………………………..

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  9. Gene flow.

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  10. Why do sex linked traits appear more in males than in females ?

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  11. Restriction digestion.

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  12. What is the use of tissue plasminogen activator?

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  13. Name the type of animal breeding carried out to produce a mule.

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  14. Why is zona pellucida retained around the egg till it reaches uterus?

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  15. Draw a neat and well labelled diagram of human excretory system.

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  16. Write a note on desert adaptations.

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  17. Give the ecomoic importance of fisheries

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  18. Distinguish between X and Y chromosomes. (Mention any 'two' points.)

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  19. Give applications of a vaccine.

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  20. With the helop of a chart, explain the method of sex determination in ...

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  21. Describe the structure of an antibody.

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