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$ Viruses are not an exception to all th...

$ Viruses are not an exception to all theory
! During mitosis the number of chromosomes is reduced to a half.

A

If both As and R are correct and R is correct explanation of As

B

If both As and R are correct but R is not correct explanation of As

C

If As is correct, R is wrong

D

If both As and R are wrong.

Text Solution

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The correct Answer is:
D
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DINESH PUBLICATION-ENVIRONMENTAL ISSUES-Assertion and reason
  1. $ A cell with actively dividing nucleus is called interphase cell. !...

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  2. $ Hormones are the secretions to all theory. ! During mitosis the nu...

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  3. $ Viruses are not an exception to all theory ! During mitosis the nu...

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  4. $ Cellular totipotency means that single cell can give rise to a fully...

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  5. $ Flow of genetic information is through the DNA of the nucleus . ! ...

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  6. $ Endoplasmic reticulum also acts as the cell-skelton. ! Flagellum o...

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  7. $ Acetabularia is the largest sized single called green algra. ! PPL...

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  8. $ Cyanobacterial cells are eukaryotic ! Prokaryotic cells are diplo...

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  9. $ Protoplasm is the physical basis of a cell. ! Angstrom is a unit ...

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  10. $ All the living and non living matter is formed of molecules. ! Mo...

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  11. $ Minerals such as carbonates and phosphates acts as buffers. ! Biom...

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  12. $ ATP is a type of coenzyme. ! Adenine is a type of pyrimidine.

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  13. $ Ergosterol is a lipid that changes to vitamins D on activation by UV...

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  14. $ Minerals from 25 to 30% of the cell contents. ! Lipids form 40 to ...

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  15. $ Proteins, polysaccharides and nucleic acid are the macromolecules of...

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  16. $ DNA helix to 20Å wide. One complete turn of DNA is 34Å long.

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  17. $ The two strands of DNA run in an antiparallel directions DNA is fo...

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  18. $ The process of formation of polysaccharides by condensation of monom...

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  19. $ Agar-agar is a carbohydrate obtained from some sea weeds. ! Agar a...

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  20. $ In conjugated proteins, the protein molecule is joined to a non pro...

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