Home
Class 12
BIOLOGY
Assertion : Trasnlocation of suger from ...

Assertion : Trasnlocation of suger from source to sink is defined as pressure flow hypothesis. Reason : Translocations of the solutes is facilitated through living phloem sieve tube cells

A

If both are ture with reason being correct explanation (A).

B

both ture but reason is not correct explanation (B),

C

Assertion ture but reason is wrong (C),

D

both are wrong (D),

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • TRANSPORT IN PLANTS

    DINESH PUBLICATION|Exercise CHECK YOUR GRASP|22 Videos

  • TRANSPORT IN PLANTS

    DINESH PUBLICATION|Exercise CHECK YOUR GRASP|22 Videos

  • THE LIVING WORLD

    DINESH PUBLICATION|Exercise Check your grasp|12 Videos

  • VERTEBRATA-AGNATHA AND PISCES

    DINESH PUBLICATION|Exercise Check Your Grasp|9 Videos

Similar Questions

Explore conceptually related problems

Assertion : In phloem loading , food is transported to sink. Reason : Food is transported from source to sink.

Assertion :- Food is transported by phloem from source to sink, primarily in form of sucrose. Reason:- Sucrose is chemically inert but osmotically active.

Assertion :- Phloem translocation is bidirectional. Reason:- Source-sink relationship is variable according to season and need of plant.

Assertion :- Companion cells are essential for functioning of sieve tubes. Reason :- The companion cells help in maintaining the pressure gradient in sieve tubes.

Assertion : long distance flow of phtoassimilates in plants occurs through sieve tubes. Reason: mature seive tubes have parietal cytoplasm

Assertion : Efficiency of a Carnot engine increase on reducing the temperature of sink. Reason : The efficiency of a Carnot engine is defined as ratio of net mechanical work done per cycle by the gas to the amount of heat energy absorbed per cycle from the source.

Assertion : In osmosis solvent moves through a semipermeable membrane from a place of lower diffusion pressure to a place of higher diffusion pressure. Reason : It is due to migration of solvent from hypertonic solution to hypotonic solution through a semipermeable membrane.

Assertion : When current is drawn from a cell, chemical energy is converted into heat energy. Reason : This is because wire through which current flows gets heated.

DINESH PUBLICATION-TRANSPORT IN PLANTS-REVISION QUESTIONS FROM COMPETITIVE EXAMS
  1. Water potential of soil quantified in term of

    Text Solution

    |

  2. Identify the wrong statement

    Text Solution

    |

  3. Find the correct pair of statements (i) Influx of cl' into guard cel...

    Text Solution

    |

  4. Arrange the following in ascending order based on their solute concent...

    Text Solution

    |

  5. Photosynthates are translocated from source to sink organs mainly in t...

    Text Solution

    |

  6. The movement of water and minerals in xylem and the movement of phloem...

    Text Solution

    |

  7. In the given diagram, which is the initial condition of plasmolysis

    Text Solution

    |

  8. Process of water exudation from hydathodes is known as

    Text Solution

    |

  9. Apoplastic movement of water occurs exclusively through the the (i) In...

    Text Solution

    |

  10. In plants opening of stomata is regulated by

    Text Solution

    |

  11. In cipient plasmolysis is

    Text Solution

    |

  12. Turgor pressure of a plant cell increases due to

    Text Solution

    |

  13. The movement of solvent molecules into the region of higher solute con...

    Text Solution

    |

  14. Which of the following equations is correct in respect of osmotic phen...

    Text Solution

    |

  15. X and Y are adjacent living cells. The cell X has solute potential (Ps...

    Text Solution

    |

  16. Water vapour comes out from the plant leaf through the stomatal openin...

    Text Solution

    |

  17. A few drops of sap were collected by cutting across a plant stem by a ...

    Text Solution

    |

  18. A plasmolysed cell can be deplasmolysed by placing it in

    Text Solution

    |

  19. Assertion : Trasnlocation of suger from source to sink is defined as p...

    Text Solution

    |

  20. Which of the following facilitates opening of stomatal aperture ?

    Text Solution

    |