Home
Class 12
BIOLOGY
[A]: Light is very important external fa...

[A]: Light is very important external factor of transpiration.
[R]: Light induces stomata! opening and darkness stomata! closure. Thus the rate of transpiration increases in light and de- creases in dark.

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

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • Plant Morphology & Reproduction

    TRUEMAN BIOLOGY|Exercise ASSERTION AND REASON|64 Videos

  • PRINCIPLES OF INHERITANCE AND VARIATIONS

    TRUEMAN BIOLOGY|Exercise MCQs|341 Videos

Similar Questions

Explore conceptually related problems

[A]: The rate of photosynthesis is determined in terms of the rate of production either per unit mass of green tissue or per unit weight of total chlorophyll. [R]: Amount of light, CO_2 supply and tem- perature are important internal factors 'that directly affect the photosynthesis.

[A]: Xanthium will not flower if the long dark period is interrupted by a single brief flash of light. [R]: Xanthium is a long day plant where con- tinuous long loght period as essential for flowering.

TRUEMAN BIOLOGY-Plant Physiology -ASSERTION AND REASON
  1. [A]: Hill and Bendall proposed Z-scheme and suggested that photosystem...

    Text Solution

    |

  2. [A]: Rhizobial aggregates have been ob- served at distinct sites on cu...

    Text Solution

    |

  3. [A]: Light is very important external factor of transpiration. [R]:...

    Text Solution

    |

  4. [A]: Wax, resin and suberin coating on the surface of plant parts redu...

    Text Solution

    |

  5. [A]: Gibberellic acid when added to isolated aleurone layer, induces a...

    Text Solution

    |

  6. Assertion : Auxillary buds, in actively growing herbaceous plants, gen...

    Text Solution

    |

  7. Assertion : If you burn a plant , its nitrogen component is given of...

    Text Solution

    |

  8. [A]: Amino acids are converted into ammonia by a group bacteria called...

    Text Solution

    |

  9. [A]: Due to excessive use of fertilizers, the available water to the p...

    Text Solution

    |

  10. [A]: Vernalization is also called as yarovization. [R]: In short day...

    Text Solution

    |

  11. [A]: Fundamental factor in the vernalization is low temperature. [R...

    Text Solution

    |

  12. [Aj: ABA plays an important role in plants during water stress and dro...

    Text Solution

    |

  13. (A]: Cytokinins help in retention of cholorophyll and delayed senescen...

    Text Solution

    |

  14. [A]: The germination of lettuce seeds is stimulated by red light and i...

    Text Solution

    |

  15. [A]: The far-red form of the phytochromes ab- sorb light at 740 nm. ...

    Text Solution

    |

  16. [A]: Elongation and division of cells are pro- moted by gibberellins. ...

    Text Solution

    |

  17. [A]: Senescence effect can be reversed by cytokinin. [R]: The loss ...

    Text Solution

    |

  18. [A]: Wilting occurs due to loss in turgidity. [R]: Turgor pressure c...

    Text Solution

    |

  19. [A]: Plasmolysis is seen by both living and dead cells. [R]: Both ty...

    Text Solution

    |

  20. [A]: The water is absorbed by the root and moves into the stem. [R]...

    Text Solution

    |