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Provide two reasons that make the counti...

Provide two reasons that make the counting of prokaryotic species difficult.

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The reasons that make the count of prokaryotic species difficult are:
(i) The Prokaryotic cells are very small in size and cannot be seen by naked eyes.
(ii) Evolution rate is faster due to short doubling time.
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XII BOARD PREVIOUS YEAR PAPER ENGLISH-XII BOARDS-SET 1 [COMPTT]
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  2. Name the material used as matrix in gel-electrophoresis and mention it...

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  3. Write the level of biodiversity represented by a mangrove. Give anothe...

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  4. Name the two gases contributing maximum to the green house effect.

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  5. What is amniocentesis? How is it misused ?

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  6. Rearrange the following in increasing order of evolution? Gnetales, ...

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  7. Differentiate between active immunity and passive immunity.

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  8. Differentiate between outbreeding and outcrossing.

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  9. Name two groups of organisms which constitute 'flocs'. Write their inf...

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  10. Why is making cells competent essential for biotechnology experiments?...

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  11. Write any two ways how genetically modified plants are found to be use...

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  12. Provide two reasons that make the counting of prokaryotic species diff...

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  13. How is apomixis different from parthenocarpy ?

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  14. Describe any two modes by which apomictic seeds and be produced.

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  15. What are the transcriptional products of RNA polymerase III?

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  16. Differentiate between 'Capping' and 'Taling'.

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  17. Expand hrRNA.

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  18. Giving three reasons, write how Hardy-Weinberg equilibrium can be affe...

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  19. Do you support 'Dope' test being conducted on sportspersons perticipat...

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