Home
Class 12
BIOLOGY
Assertion :- Winter varieties of wheat &...

Assertion :- Winter varieties of wheat & rye are planted in autumn not in spring.
Reason:- If winter varieties planted in spring normally they fail to flower or produce mature grain within a span of flowering season.

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:
A
Promotional Banner

Topper's Solved these Questions

  • PLANT GROWTH AND DEVELOPMENT

    MOTION|Exercise Exercise - 3|28 Videos

  • PHOTOSYNTHESIS IN HIGHER PLANTS

    MOTION|Exercise Exercise - 4 (ASSERTION & REASON QUESTIONS)|33 Videos

  • PLANT KINGDOM

    MOTION|Exercise Check your concepts -1|16 Videos

Similar Questions

Explore conceptually related problems

Some varieties of wheat are known as spring wheat while others are called winter wheat. Former variety is sown and planted in spring and is harvested by the end of the same season. Hower winter varietis if planted in spring fail to flower or produce mature grains within a span of a slowering season . Explain, why?

Winter varieties are normally planted in

Fill in the blanks: (1) Wheat, barley end rye have two kinds of varieties: wmter and spring varieties. The ‘spring’ variety are normally plented in ....a.... and come to flower and produce gram before the end of growing season. (2) 'Winter varieties, however if planned in ..b... would normally fail to flower or produce mature grain within a span of flowering season. (3) hence ‘winter’ varieties are planted in ..c.... . They germinate, and over ........d come out as harvested usually around mid-summer.

Spring and winter varieties are found in

Winter varieties of annual plants are planted in autumn, they germinate, and over winter come out as small seedlings, resume growth in spring and are harvested around mid-summer.

Assertion : Majority of the drugs abused by humans are obtained from fungi. Reason : Some are also obtained from flowering plants.

Assertion : Wild varieties of crop plants must ne conserved. Reason : Genome of wild plants serve as important resources for selection of desired genes like genes for pest resistance.

Select the incorrect expression with respect to vernalisation I) Winter variety of barley if planted in spring fail to flower in a flowering season II) Biennials like sugar beet, cabbage, carrot are monocarpic plants III) Speeding up ability to flower by low temperature treatment IV) Winter variety of wheat is harvested during winter season

A cross between two white flowered varieties of Sweet Pea yields purple flowered plants due to

MOTION-PLANT GROWTH AND DEVELOPMENT-Exercise - 4
  1. Assertion :- Environmental signals such as light and gravity also affe...

    Text Solution

    |

  2. Assertion :- Oxygen is compulsory for growth Reason:- Oxygen is mus...

    Text Solution

    |

  3. Assertion :- The act leading to maturation is known as differentiation...

    Text Solution

    |

  4. Assertion :- Beside growth, differentiation in plants is also open. ...

    Text Solution

    |

  5. Assertion :- Development is a broad and extensive aspect of the life o...

    Text Solution

    |

  6. Assertion :- Buttercup produces two different kind of leaves within th...

    Text Solution

    |

  7. Assertion :- Growth regulators are intrinsic and intercellular factors...

    Text Solution

    |

  8. Assertion :- Auxins help to prevent fruit and leaf drop at early stage...

    Text Solution

    |

  9. Assertion :- 2,4-D is one of the selective weedicide. Reason:- 2,4-...

    Text Solution

    |

  10. Assertion :- GA3 is used to speed up the malting process in brewing in...

    Text Solution

    |

  11. Assertion :- Spraying of gibberellin leads to early seed formation in ...

    Text Solution

    |

  12. Assertion :- Kinetin is synthetic cytokinin. Reason:- Kinetin was o...

    Text Solution

    |

  13. Assertion :- Cytokinins helps in the delay of leaf senescence. Reas...

    Text Solution

    |

  14. Assertion :- Ethylene increases the yield of cucurbits. Reason:- Et...

    Text Solution

    |

  15. Assertion :- ABA is stress hormone. Reason:- ABA causes abscission ...

    Text Solution

    |

  16. Assertion :- In day neutral plants there is no correlation between exp...

    Text Solution

    |

  17. Assertion :- Flowering in plants depends only on a combination of ligh...

    Text Solution

    |

  18. Assertion :- LDPs without leaf are unable to flower. Reason:- Leave...

    Text Solution

    |

  19. Assertion :- Vernalisation prevents precocious reproductive developmen...

    Text Solution

    |

  20. Assertion :- Winter varieties of wheat & rye are planted in autumn not...

    Text Solution

    |