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[A] : Behavioural activities that are co...

[A] : Behavioural activities that are correlated with a one week cycle under fairly constant conditions are called circadian rhythms .
[R] : Experiments have proved that biological clock is entirely internal.

A

If both A and R are true and R is the correct explanation of A

B

If both A and R are true but R is not the correct explanation of A

C

If A is true and R is false

D

If both A and R are false

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TRUEMAN BIOLOGY-Living World -ASSERTION AND REASON
  1. [A] : Homeostasis is the maintenance of a stable internal environment ...

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  2. [A] : Usually the cells of animals and plants have controlled growth ....

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  3. [A] : Behavioural activities that are correlated with a one week cycle...

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  4. [A] : Prokaryotic cell shows no cyclosis. [R] : Eukaryotic cell show...

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  5. [A] : No energy can be released in the cell in the absence of mitochon...

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  6. [A] : Nuclear membrane or karyotheca forms an envelope-like structure ...

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  7. [A] : The space between nuclear envelope and nucleolus is filled by ka...

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  8. [A] : Leucocytes can digest any thing harmful they eat . [R] : Leuco...

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  9. [A] : The nuclear membrane forms envelope like structure called nuclea...

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  10. [A] : The nuclear envelope is the derivative of membrane of mitochondr...

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  11. [A] : Rods and cones of retina are modified cilia . [R] : Cilia are ...

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  12. [A] : Golgi bodies and dictyosomes are synonymous . [R] : In plants ...

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  13. [A] : Mitochondria have evolved from bacteria . [R] : Mitochondria a...

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  14. [A] : Calcium carbonate crystals are called cystoliths . [R] : The m...

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  15. [A] : F(0) - F(1) - ATPase complex is embedded in inner membrane of mi...

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  16. [A] : Centromere is concerned with splitting of chromosomes . [R] : ...

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  17. [A] : Peroxisomes and basal bodies are called microbodies . [R] : Mi...

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  18. [A] : A microtubule structure that brings about chromosomal movement d...

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  19. [A] : Active transport results in solute movement against a concentrat...

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  20. [A] : Plasma membrane is thin and not visible as a separate layer . ...

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