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$ Cellular totipotency means that single...

$ Cellular totipotency means that single cell can give rise to a fully grown multicellular organisms
! Meristematic cells are also called "stem cells".

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:
b
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A: The zygote develops into a multicellular organisms. R: Each cell is totipotent.

DINESH PUBLICATION ENGLISH-ENVIRONMENTAL ISSUES-Assertion and reason
  1. A: Mitosis is a equational division . R:During mitosis the number of...

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  2. A; Viruses are not an exception to all theory R: viruses are acellul...

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

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  4. A Flow of genetic information is through the DNA of the nucleus . R...

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  5. As :Endoplasmic reticulum also acts as the cell-skelton. R:Flagellum...

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  6. As: Acetabularia is the largest sized single celled green algae. R P...

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

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

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  9. A: All the living and non living matter is formed of molecules. R: ...

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

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  11. A: ATP is a type of coenzyme. R: Adenine is a type of pyrimidine.

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

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

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

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  15. Length of one turn of DNA is

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

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

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  18. Assumption: Agar-agar is a carbohydrate obtained from some sea weeds. ...

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  19. A: In conjugated proteins, the protein molecule is joined to a non pr...

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  20. $ Rhodopsin of rod cells and iodospin of cone cells of retina are prot...

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