Home
Class 12
BIOLOGY
A few drops of sap were collected by cut...

A few drops of sap were collected by cutting across a plant stem by a suitable method. The sap was tested chemically. Which one of the following test results indicates that it is phloem sap ?

A

Acidic

B

Alkaline

C

Law refractive index

D

The absoence of sugar

Text Solution

Verified by Experts

The correct Answer is:
B
The phloem sap is alkaline in nature. It continuously pumps protons form its companion cells to the other neighbouring cells during transport of sugars.
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

Which one of the following indicates that a diagnostic test is valid?

Which one of the following features is an indication for modification of stem of a plant?

A flame test was performed to confirm the identity of a metal ion in solution. The result was a green flame. Which of the following metal ions is indicated?

A student took solution X in a test -tube and added a few drops of universal indicator to it. The solution turned blue. On addind another solution Y to this test tube drop wise, the colour of solution changed to green. When a yet another solution Z was added the solution turned yellow. Which of the following gives the correct conclusion of the student?

A student was asked to test an unknown colourless solution with an indicator. When he added a few drops of phenolphthalein indicator, the solution turned pink. Which one of the following chemicals should be added in excess so as to obtain the colourless solution again?

Which one among the following chemical tests is used to distinguish monosaccharide from disaccharide ?

ARIHANT NEET-TRANSPORT IN PLANTS -Chapter exercises C. Medical entrances gallery (Collection of questions asked in NEET & Various Medical Entrance Exams )
  1. A few drops of sap were collected by cutting across a plant stem by a ...

    Text Solution

    |

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

    Text Solution

    |

  3. Which of the following is not correct in mass flow hypothesis ?

    Text Solution

    |

  4. Match the following Columns.

    Text Solution

    |

  5. Which of the following statements about plasmolysis is/are true ? I....

    Text Solution

    |

  6. The correct ascending sequence with respect to their water potential i...

    Text Solution

    |

  7. Find out the correct pair of statements (i) In completely plas...

    Text Solution

    |

  8. Match the correct combination.

    Text Solution

    |

  9. The number of stomatal pores per cm^(2) of leaf surface are in the ran...

    Text Solution

    |

  10. A column of water within xylem vessels of tall trees does not break un...

    Text Solution

    |

  11. Root pressure is due to

    Text Solution

    |

  12. Water potential gradient between absorbent and the liquid imbibed is ...

    Text Solution

    |

  13. The continuity of water column in xylem is maintaned due to

    Text Solution

    |

  14. The apoplast is located

    Text Solution

    |

  15. Guttation is a process of loss of water in

    Text Solution

    |

  16. Swelling of wooden frames during rains is caused by

    Text Solution

    |

  17. Layer of cells impervious to water because of a band of suberised matr...

    Text Solution

    |

  18. When a cell is fully turgid which of the following will be zero

    Text Solution

    |

  19. Guttation occurs through

    Text Solution

    |

  20. Which of these is/are not a property of faciliated transport ? I. Re...

    Text Solution

    |