Home
Class 12
BIOLOGY
[A]: In the hydrophytes the Xylem is not...

[A]: In the hydrophytes the Xylem is not differ- entiated into different types of cells.
[R]: Xylem provides support and helps in the conduction of water which is not very impor- tant in hydrophytes

A

If both A and R are true and R is the correct explanation of A

B

If both A and R are true but R is not the correct explanation of A

C

If A is true and R is false

D

If both A and R are false

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • PLANT KINGDOM

    TRUEMAN BIOLOGY|Exercise MULTIPLE CHOICE QUESTION|247 Videos

  • Plant Physiology

    TRUEMAN BIOLOGY|Exercise ASSERTION AND REASON|91 Videos

Similar Questions

Explore conceptually related problems

[A]: Root system in hydrophytes is poorly de- veloped. [R]: The condition helps hydrophytes to avoid maximum water absorption

Consider the following statements 1. Xylem vessels are semi-permeable 2. Sieve tubes translocate only solutes 3. Xylem vessels do not have a turgor pressure 4. Companion cells help in maintaining pressure gradient in the sieve tubes . Which of the statements given above are correct ?

Consider the following statements A. Stomata are completely absent in hydrophytes. B. In hydrophytes, vasuclar bundles always have bundle sheaths. C. Proline helps in maintaing osmotic and water potentila in xerophytes. Which of the statements given above is/are correct ?

Four rods with different raddi r and length l are used to connect two heat reservoirs at different temperatures . Which one will conduct most heat ?

[A]: The water is absorbed by the root and moves into the stem. [R]: From root hair cell, water directly moves to xylem cells

Consider the following statements 1. In pteridophytes, the phloem lacks companion cells. 2. The xylem lacks vessels in majority of pteridophytes. 3. Heterosporous pteridophytes have monoecious gametophytes. 4. Water is essential for fertilization in pteridophytes. Which of these statements are correct?

Answer the following questions, which help you understand the difference between Thomson’s model and Rutherford’s model better. Keeping other factors fixed, it is found experimentally that for small thickness t, the number of a-particles scattered at moderate angles is proportional to t. What clue does this linear dependence on t provide?

TRUEMAN BIOLOGY-Plant Morphology & Reproduction -ASSERTION AND REASON
  1. [A]: The inner most distinict layer of the cortex is called endomermi...

    Text Solution

    |

  2. [A]: Gramineous type of stomata are found in Gramineae and Cyperaceae....

    Text Solution

    |

  3. [A]: lntercellular spaces are found in meristematic cells [R]: The m...

    Text Solution

    |

  4. [A]: Monocot stem has collateral open vascu- lar bundle. [R]: Open ...

    Text Solution

    |

  5. [A]: Root system in hydrophytes is poorly de- veloped. [R]: The con...

    Text Solution

    |

  6. [A]: Aerenchyma is a characteristic of litho- phyte. [R]: It is a sp...

    Text Solution

    |

  7. [A]: Protostele is most simple primitive type of stele. [R]: Accordi...

    Text Solution

    |

  8. [A]: Rubber is obtained from the latex of Hevea brasiliensis. [R]: B...

    Text Solution

    |

  9. [A]: No fibres are found in plants. [R]: Xylem vessels are absent ...

    Text Solution

    |

  10. [A]: Sclerenchyma cells are rarely found in plants. [R]: Sclerencym...

    Text Solution

    |

  11. [A]: Hanstein's dermatogen is not eqyivalent to Haberlandt's Protoderm...

    Text Solution

    |

  12. [A]: Trichomes may occur on all parts of a plant. [R]: Trichomes ei...

    Text Solution

    |

  13. [A]: The vascular cambium is absent in monocots. [R]: The monocots ...

    Text Solution

    |

  14. [A]: In the hydrophytes the Xylem is not differ- entiated into differe...

    Text Solution

    |

  15. [A]: Dicot stem shows secondary growth. [R]: Tissue system is not d...

    Text Solution

    |

  16. given below are assertion and reson. Point out if Assertion . In woo...

    Text Solution

    |

  17. [A]: The inner most distinct layer of the cortex is called endodermis...

    Text Solution

    |

  18. [A]: Sieve tube members have abundant cy- toplasm but there is no nucl...

    Text Solution

    |

  19. Assertion : In collateral vascular bundles phloem is situated toward ...

    Text Solution

    |

  20. [A]: Xylem translocates water and dissolved mineral salts from the roo...

    Text Solution

    |