Home
Class 12
BIOLOGY
Translocationn of photosynthetic end pro...

Translocationn of photosynthetic end products in sieve tubes is

A

305 mm/h

B

3-5 cm/h

C

1-15 cm/h

D

60-100 cm/h

Text Solution

Verified by Experts

The correct Answer is:
D
Dixon (1923) reported that the sieve tube contents move at the rate of 50 cm per hour, while the simple diffusion of sugar molecules takes place at rate of 0.2 mm per day.
Promotional Banner

Topper's Solved these Questions

  • TRANSPORT IN PLANTS

    ARIHANT NEET|Exercise Chapter exercises B. Medical entrances special format questions (Assertion and reason)|10 Videos

  • THEORIES OF EVOLUTION

    ARIHANT NEET|Exercise Chapter exercise C (Medical entrances gallery ( collection of questions Asked in NEET & Various Medical Entrance Exames )|4 Videos

  • VIRUSES

    ARIHANT NEET|Exercise C. Medical entrances gallery|32 Videos

Similar Questions

Explore conceptually related problems

Sieve tubes have

The chief function of sieve tubes is

What is the photosynthetic product in blue-green algae

Sugar translocation in sieve tubes is a

One of the characteristic of sieve tube is

The loading and unloading of food (phloem sep) to and from the sieve tube cells is

Mention any one characteristic of the sieve tube members

ARIHANT NEET-TRANSPORT IN PLANTS -Chapter exercises C. Medical entrances gallery (Collection of questions asked in NEET & Various Medical Entrance Exams )
  1. Transpiration is manifestation of

    Text Solution

    |

  2. Which of the following theory gives the latest explanation for the clo...

    Text Solution

    |

  3. Translocationn of photosynthetic end products in sieve tubes is

    Text Solution

    |

  4. The property of semipermeability belongs to

    Text Solution

    |

  5. Cell A has osmotic potential of -18 bars and pressure potential of 8 b...

    Text Solution

    |

  6. Stomata open due to accumulation of

    Text Solution

    |

  7. In a fully turgid cell, is zero.

    Text Solution

    |

  8. By which mechanism, the salt resistant plants can get rid off excess N...

    Text Solution

    |

  9. Cell A and cell B are adjacent plant cells. In cell A Psi(s)=-20 bars ...

    Text Solution

    |

  10. Stomata open at night and close during the day time in

    Text Solution

    |

  11. Phloem sap is mainly made of

    Text Solution

    |

  12. Force generated by transpiration can create pressure sufficient to lif...

    Text Solution

    |

  13. The rate of transpiration in plants is dependent upon

    Text Solution

    |

  14. Guard cells help in

    Text Solution

    |

  15. Direction of translocation of orgainc food or solutes, is

    Text Solution

    |

  16. Stomatal opening is affected by

    Text Solution

    |

  17. Which of the following get accumulated in the vacuoles of guard cells ...

    Text Solution

    |

  18. Which of the following is the most accepted theory for movement of wat...

    Text Solution

    |

  19. Which one of the following is not an antitranspirant

    Text Solution

    |

  20. Which one of the following is not related to guttation ?

    Text Solution

    |