Home
Class 11
BIOLOGY
Explain why xylem transport is unidirect...

Explain why xylem transport is unidirectional and phloem transport bi-directional.

Promotional Banner

Topper's Solved these Questions

  • THE LIVING WORLD

    ASSAM ACADEMIC CENTRE|Exercise EXAMPLE|49 Videos

Similar Questions

Explore conceptually related problems

Explain why the planets do not twinkle.

Explain why the setting sun looks red?

Why are some transport proteins called pumps?

Explain why NO_2 dimerises.

Why does transport of ions occur only in one direction in root endodermal cells?

Explain why KO_2 is paramagnetic?

Explain why CH_4 is not square planer.

Explain why HI is the strongest reducing agent among the halogens?

Explain why rainbow is never seen on the surface of the moon.

Explain why Be has higher enthalpy of ionisation than B.

ASSAM ACADEMIC CENTRE-TRANSPORT IN PLANTS-EXAMPLE
  1. Discuss the factors responsible for ascent of xylem sap in plants.

    Text Solution

    |

  2. What essential role does the root endodermis play during mineral absor...

    Text Solution

    |

  3. Explain why xylem transport is unidirectional and phloem transport bi-...

    Text Solution

    |

  4. Explain pressure flow hypothesis of translocation of sugars in plants.

    Text Solution

    |

  5. What causes the opening and closing of guard cells of stomata during t...

    Text Solution

    |

  6. Define translocation.

    Text Solution

    |

  7. What is meant by uniport?

    Text Solution

    |

  8. Mention two similarities between diffusion and facilitated diffusion.

    Text Solution

    |

  9. Why are some transport proteins called pumps?

    Text Solution

    |

  10. Why does transport reach a maximum or become saturated in facilitated ...

    Text Solution

    |

  11. Mention one similarity between transport proteins and enzyme proteins.

    Text Solution

    |

  12. What is the unit of water potential?

    Text Solution

    |

  13. Define solute potential.

    Text Solution

    |

  14. What is the value of water potential of pure water?

    Text Solution

    |

  15. What is the effect of increased and decreased solute concentration on ...

    Text Solution

    |

  16. What determines the cell to cell movement of water in plants?

    Text Solution

    |

  17. Represent the relationship between water potential, solute potential a...

    Text Solution

    |

  18. Name the structures in plant cells which determine the movement of mol...

    Text Solution

    |

  19. Mention the two factors on which the net rate and direction of osmosis...

    Text Solution

    |

  20. What is osmotic pressure?

    Text Solution

    |