Home
Class 11
BIOLOGY
The annular and spirally thickened condu...

The annular and spirally thickened conducting elements generally develop in the protoxylem when the root or stem is:

A

elongating

B

widening

C

differentiating

D

maturing.

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • ANATOMY OF FLOWERING PLANTS

    JBD PUBLICATION|Exercise EXAMPLE|56 Videos

  • ANIMAL KINGDOM

    JBD PUBLICATION|Exercise EXAMPLE|115 Videos

Similar Questions

Explore conceptually related problems

A parallel plate capacitor consists of two thin conducting plates each of area A held parallel to each other at a suitable distance d. insulating medium is generally filled between the plates. When one plate of the charged capacitor is earthed the charges flows, a) from plate to earth b) from earth to plate c) no change in charge on the plate d) capacitor gets discharged

Give the technical terms used for the following: It is the pressure development in tracheavy elements of xylem as a result of metabolic activities of root and considered to be an active process.

Keep some freshly cut flowers in a solution of food colour. Wait for sometime for the dye to rise in the flower, when the stem of the flower is held up in light, coloured strands can be seen inside. Can this experiment demonstrate which tissue is conducting water up the stem?

Fill in the blanks: ………..functions as conducting tissue for water and …………….roots to stem and leaves.

These questions consist of two statements each,printed as Assertion and Reason.While asnwering these questions you are required to chose any one of the following four responses. If both Assertion and Reason are true and Reason in correct explanation of Assertion. If both assertion and Reason are true but reason is not correct explanation of Assertion. If Assertion is true but Reason is false. If both Assertion and Reason are false. Assertion:Minerals are mainly absorbed by roots which are in direct contact with atmosphere. reason:The absorbed mineral elements are transported from leaves to stem through xylem.

JBD PUBLICATION-ANATOMY OF FLOWERING PLANTS-EXAMPLE
  1. The annular and spirally thickened conducting elements generally devel...

    Text Solution

    |

  2. Fill in the blanks: Vascular bundles are arranged in a ……………..in a dic...

    Text Solution

    |

  3. Fill in the blanks: Vascular bundles are…………….in a monocot stem.

    Text Solution

    |

  4. Fill in the blanks: Roots hairs are………………whereas stem hairs are………………....

    Text Solution

    |

  5. Fill in the blanks: In monocot stems vessles are…………….in shape.

    Text Solution

    |

  6. Fill in the blanks: ………………cavity is present in vascular bundle of mono...

    Text Solution

    |

  7. Fill in the blanks

    Text Solution

    |

  8. Fill in the blanks: Xylem is exarch in root and…………….. In stem.

    Text Solution

    |

  9. Fill in the blanks: Cells of ………….are suberised.

    Text Solution

    |

  10. Fill in the blanks: Lenticels are present in…………. .

    Text Solution

    |

  11. Fill in the blanks: Guard cells are……………….shaped in monocot leaf.

    Text Solution

    |

  12. Which tissue is living mechanical tissue?

    Text Solution

    |

  13. What is bicollateral vascular bundle?

    Text Solution

    |

  14. What is closed vascular bundle?

    Text Solution

    |

  15. Where do you find bicollateral vascular bundle?

    Text Solution

    |

  16. Name a monocot plant with secondary growth in stem.

    Text Solution

    |

  17. What is conjuctive tissue?

    Text Solution

    |

  18. Define intercalary meristem.

    Text Solution

    |

  19. Name the most durable wood.

    Text Solution

    |

  20. Name two plants with anomalous secondary growth.

    Text Solution

    |

  21. Where do you find radial vascular bundles?

    Text Solution

    |