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$ Life on earth originated by interactio...

$ Life on earth originated by interaction of the various chemical substances in the broth of the sea.
! The first organisms were, pherhaps the chemoautotrophs and anaerobes.

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:
A
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DINESH PUBLICATION-ENVIRONMENTAL ISSUES-Assertion and reason
  1. $ All of the living organisms utilize light energy for their metabolis...

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  2. $ Mitochondria are called "Food-Factories" of a plant cell. A plant ...

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  3. $ Life on earth originated by interaction of the various chemical subs...

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  4. $ The entire material world which can be seen and detected with instru...

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  5. $ solar system has 15 planets. ! Earth is the major member of the so...

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  6. $ The approximate distance between the sun and the Earth is about 148....

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  7. $ living organisms can exist alone ! A population is a group of orga...

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  8. $ Nucleus was discovered by Robert Brown ! Large sized organisms hav...

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  9. $ A cell with actively dividing nucleus is called interphase cell. !...

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

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

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

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

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

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

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

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

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

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

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

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