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$ Homogeniser and ultracentriguge are th...

$ Homogeniser and ultracentriguge are the devices for separating various cell organelles.
! The radioactive substances used in biological studies are called Tracer elements.

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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DINESH PUBLICATION-ENVIRONMENTAL ISSUES-Assertion and reason
  1. Assertion: The study of biomolecules is called Molecular biology. R...

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  2. Assertion: The genetic material in Tobacco mosaic virus in RNA. Rea...

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  3. $ Homogeniser and ultracentriguge are the devices for separating vario...

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  4. $ Schleiden and Schwann formulated the theory of inheritance of charac...

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  5. $ Plants which live for many years are called perennials. Perennials...

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  6. $ the sum total of anabolic and catabolic activities is called metabol...

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  7. $ DNA contains all the neccesary information and instructions for cell...

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  8. $ Homoestasis is the capacity of a living organisms to maintain its co...

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  9. $ All of the living organisms utilize light energy for their metabolis...

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

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

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

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

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

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

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

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

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

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

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

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