Home
Class 12
BIOLOGY
[A]: Gramineous type of stomata are foun...

[A]: Gramineous type of stomata are found in Gramineae and Cyperaceae.
[R]: Gramineous stoma1a are dumbbell shape

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]: Maximum transpiration occurs in meso- phytes than xerophytes. [R]: In mesophytes stomata are found on both surfaces of leaves and guard cells show frequent movements

[A] : Flagella found in green algae are of tinsel type . [R] : Flagella in algae are whiplash type .

Di-tert-glycols rearrange in the presence of acid to give alpa -tertiary ketones. The trivial name of the simplest glycol of this type is pinacol, and this type of reaction therefore is named pinacol rearrangement (in this specific case, the reaction is called a pinacol-pinacolone rearrangement). The rearrangement involves 4 steps. one of the hydroxyl groups is protonated in the first step. A molecule of water is eliminated in the second step and a tertiary carbocation is formed. The carbocation rearranges in the third step into a more stable carboxonium ion via a [1,2] rearrangement. In the last step, the carboxonium ion is deprotonated and the product ketone is obtained. What is R.D.S. of pinacol-pinacolone rearrangement?

[A]: Growth curve is the graphic representa- tion of the total growth against time. [R]: Population growth curves are of two types-J shaped and S shaped

The relative density of a material of a body is found by weighing it first in air and then in water. If the wt. of the body in air is W_(1)=8*00+-0*05 newton and weight in water is W_(2)=6*00+-0*05 newton. Then the relative density, p_(r)=(W_(1))/(W_(1)-W_(2)) with the maximum permissible error is :

TRUEMAN BIOLOGY-Plant Morphology & Reproduction -ASSERTION AND REASON
  1. [A] : The narrow band of meristemetic tissue present between pholem an...

    Text Solution

    |

  2. [A]: The inner most distinict layer of the cortex is called endomermi...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |