Home
Class 12
BIOLOGY
Assertion :- Calyx and corolla are acces...

Assertion :- Calyx and corolla are accessory whorls of the flower.
Reason :- They do not have direct role in sexual reproduction.

A

If both Assertion & Reason are True & Reason is a correct explanation of the Assertion.

B

If both Assertion & Reason are True & the Reason is not a correct explanation of the Assertion.

C

If Assertion is True but the Reason is False.

D

If both Assertion & Reason are false.

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Text Solution:** 1. **Understanding the Assertion**: The assertion states that "Calyx and corolla are accessory whorls of the flower." - The calyx is made up of sepals, and the corolla is made up of petals. Both of these structures are indeed considered accessory whorls because they are not directly involved in the reproductive process of the flower. 2. **Understanding the Reason**: The reason provided is "They do not have a direct role in sexual reproduction." - This statement is true because the primary reproductive structures of a flower are the androsium (male reproductive organs, which consist of stamens) and gynoecium (female reproductive organs, which consist of pistils). The calyx and corolla serve protective and aesthetic functions but do not participate directly in the process of reproduction. 3. **Evaluating the Relationship**: We need to determine if the reason correctly explains the assertion. - Since the assertion is true (calyx and corolla are accessory whorls) and the reason is also true (they do not have a direct role in sexual reproduction), and the reason provides a correct explanation for the assertion, we conclude that the reason supports the assertion. 4. **Final Conclusion**: Therefore, both the assertion and the reason are true, and the reason is a correct explanation of the assertion. **Final Answer**: Both assertion and reason are true, and reason is a correct explanation of the assertion. ---
Promotional Banner

Topper's Solved these Questions

  • STRUCTURAL ORGANISATION IN PLANTS (MOPRHOLOGY OF FLOWERING PLANTS & ANATOMY OF FLOWERING PLANTS)

    ALLEN|Exercise Beginner Box-1|4 Videos
  • STRUCTURAL ORGANISATION IN PLANTS (MOPRHOLOGY OF FLOWERING PLANTS & ANATOMY OF FLOWERING PLANTS)

    ALLEN|Exercise Beginner Box-2|5 Videos
  • STRUCTURAL ORGANISATION IN PLANTS (MOPRHOLOGY OF FLOWERING PLANTS & ANATOMY OF FLOWERING PLANTS)

    ALLEN|Exercise Exercise-III (A) [NCERT Based Questions]|55 Videos
  • STRATEGIES FOR ENHANCEMENT IN FOOD PRODUCTION & ANIMAL HUSBANDRY

    ALLEN|Exercise Question|47 Videos
  • STRUCTURAL ORGANISATION OF ANIMALS (ANIMALTISSUE)

    ALLEN|Exercise S|32 Videos

Similar Questions

Explore conceptually related problems

Reproductive whorls of a flower are :

Distinguish between a gamete and zygote. Explain their roles in sexual reproduction.

Assertion: Be and Mg do not impat characteristic colour to the flame. Reason: both Be and Mg have high ionization energy.

Which of the following is the correct sequence of events of sexual reproduction in a flower?

Can you name two parts in a flower in which the two most important units of sexual reproduction develop?

Assertion :- Cleistogamous flowers are invariably autogamous. Reason :- These flowers do not open at all.

Assertion : An angiospermous flower represents the modified condensed shoot which performs the function of sexual reproduction. Reason : The fertile leaves of the shoot become modified into microsporophylls and megasporophylls which bear ovules and anthers respectively.

Give two reasons for the appearance of variations among the progeny formed by sexual reproduction.

Assertion :- ln Angiosperms, sexual reproduction takes place through the flower. Reason : All the parts of the flower are modification of stem

Assertion: Guanine cannot pair with cytosine. Reason: Guanine and cytosine do not have perfect matching.

ALLEN-STRUCTURAL ORGANISATION IN PLANTS (MOPRHOLOGY OF FLOWERING PLANTS & ANATOMY OF FLOWERING PLANTS)-Exercise-IV (Assertion & Reason)
  1. Assertion :- In Australian Acacia the leaflets are short lived. Reas...

    Text Solution

    |

  2. Assertion :-Flower is a modified shoot. Reason :-In flower vegtation...

    Text Solution

    |

  3. Assertion :- Calyx and corolla are accessory whorls of the flower. R...

    Text Solution

    |

  4. Assertion :- Pea flowers are zygomorphic. Reason :-Pea flowers can b...

    Text Solution

    |

  5. Assertion :- Canna flowers are asymmertric. Reason :- Canna flowers ...

    Text Solution

    |

  6. Assertion :- In mustard flowers are hypogynous. Reason :-In mustard ...

    Text Solution

    |

  7. The stamens are attached the petals in

    Text Solution

    |

  8. Assertion :- Flowers are arranged in acropetal manner in cymose inflor...

    Text Solution

    |

  9. Assertion :- Fruit is caryopsis in poaceae. Reason :-Placentation is...

    Text Solution

    |

  10. Assertion :- Reticulate venation is found in dicots. Reason:- Veinle...

    Text Solution

    |

  11. Assertion :- Ovary of Brassicaceae is unilocular in the belonging but ...

    Text Solution

    |

  12. Assertion :- Inflorescence in compositae is capitulum. Reason :-Co...

    Text Solution

    |

  13. Assertion :- Stilt root is a example of supporting root. Reason :- St...

    Text Solution

    |

  14. Assertion :- In basal placentation ovary is unilocular. Reaon :- Bas...

    Text Solution

    |

  15. The petiole modified into leaf like structure is known as

    Text Solution

    |

  16. Assertion . A mangrove tree growing in marshy place has pneumatophores...

    Text Solution

    |

  17. Assertion: Both apical meristem and intercalary meristem areprimary me...

    Text Solution

    |

  18. Assertion :- Simple permanent tissues are homogenous tissue. Reason:...

    Text Solution

    |

  19. Which xylem element have highly thickned walls and obliterated central...

    Text Solution

    |

  20. Assertion :- Companion cells are essential for functioning of sieve tu...

    Text Solution

    |