Home
Class 11
BIOLOGY
Assertion: The trichomes in the shoot sy...

Assertion: The trichomes in the shoot system are usually multicellular.
Reason: The trichomes help in preventing water loss due to evaporation.

A

If both assertion and reason are true and reason is the correct explanation of assertion

B

if both assertion and reason are true but reason is not the correct explanation of assertion.

C

if assertion is true but reason is false.

D

if both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
B

The stem epidermal hairs are called trichomes. The trichomes in the shoot system are usually multicellular. They may be branched or unbranched and soft of stiff. They may even be secretory. The trichomes help in preventing water loss due to transpiration.
Promotional Banner

Topper's Solved these Questions

  • ANIMAL KINGDOM

    NCERT FINGERTIPS|Exercise Animal Kingdom|148 Videos

Similar Questions

Explore conceptually related problems

Assertion :- Epidermal stem hairs are usually of multicellular in nature. Reason:- They are of absorptive nature.

In the following questions , a statement of assertion (A) is followed by a statement of reason (R). A: Epidermal hairs on the stem are called trichomes R: They help in absorption of water loss due to transpiration,

Assertion (A): The muscular walls of ventricles are thicker than auricles. Reason (R): This helps in preventing the back flow of blood.

Assertion : Highest state of entropy in the living system is at death Reason: Free energy is required to prevent death.

Assertion : Spermathecae aare the main part of reproductive system of annelida. Reason : Spermathecase help in sperm transfer.

Assertion: The equilibrium in physical system is also dynamic in nature. Reason: The equilibrium ice hArr water is static is static in nature.

How many of the following statements are correct? 1. Conjoint vascular bundles are not present in monocot stem. 2. Casparian strips of endodermis are made of cutin. 3. Pith is large and well developed in monocot roots. 4. Trichome helps in water loss due to transpiration.

Assertion : The air bubble shines in water. Reason : Air bubble in water shines due to refraction of light.

NCERT FINGERTIPS-ANATOMY OF FLOWERING PLANTS-Anatomy Of Flowering Plants
  1. In conifers fibres are likely to be absent in

    Text Solution

    |

  2. When wepeel the skin of a potato tuber, we remove

    Text Solution

    |

  3. A vesselless piceof stem possessing prominent sieve tubes would belong...

    Text Solution

    |

  4. Which one of the following cells types always divides by anticlinal ce...

    Text Solution

    |

  5. What is the fate of primary xylem in a dicot root showing extensive se...

    Text Solution

    |

  6. Assertion: Both apical meristem and intercalary meristem are primary m...

    Text Solution

    |

  7. Assertion: Fascicular vascular cambium, interfascicular cambium and co...

    Text Solution

    |

  8. Assertion: A simple tissue is made of only one type of cells. Reason...

    Text Solution

    |

  9. Assertion: Sclereids are found in fruit walls of nuts, pulp of fruits ...

    Text Solution

    |

  10. Assertion: Xylem vessel is a long cylindrical tube like-structure made...

    Text Solution

    |

  11. Assertion: Phloem fibers or bast fibers are made up of collenchymatous...

    Text Solution

    |

  12. Assertion: Each stomata is composed of two bean shaped cells known as ...

    Text Solution

    |

  13. Assertion: The trichomes in the shoot system are usually multicellular...

    Text Solution

    |

  14. Assertion: In dicot stem, endodermis is also called as starch sheath. ...

    Text Solution

    |

  15. Vascular bundles are conjoint, collateral and closed in dicot stem R...

    Text Solution

    |

  16. Assertion: in dicot leaf, epidermis covers both the upper surface (ada...

    Text Solution

    |

  17. Assertion: Secondary growth usually occurs in dicotyledonous stems. ...

    Text Solution

    |

  18. Assertion: Cork or phellem is impervious to water. Reason: Cork has ...

    Text Solution

    |

  19. Assertion: The greater part of secondary xylem is lighter in colour an...

    Text Solution

    |

  20. Assertion: The wood is actually secondary xylem. Reason: Secondary g...

    Text Solution

    |