Home
Class 12
BIOLOGY
What is correct explanation of...

What is correct explanation of

A

Zygomorphic, bisexual, sepals 5 and gamosepalous, petals five and papilionaceous, anthers the and monadelphous, ovary superior and monocarpellary

B

Zygomorphic, unisexual, sepals five and gemosepalous, petals five and polypetalous, anthers nine united and one-free, ovary superior and mono-carpellary

C

Zygomorphic, bisexual, sepals five and gamosepalous, petals five and popilionaceous, anthers ten and diadelphous, ovary superior and monocarpellary

D

Zygomorphic, bisexual, sepals five and united, petals five and united, anthers ten and diadelphous, ovary superior and monocarpellary

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the correct explanation of the floral formula, we will break down the floral formula step by step and analyze each component based on the information provided in the video transcript. ### Step-by-Step Solution: 1. **Understanding Floral Formula**: - A floral formula represents the arrangement of different parts of a flower using symbols. Each symbol corresponds to specific characteristics of the flower. 2. **Identifying Symmetry**: - The first symbol indicates **zygomorphic symmetry**, which means the flower can be divided into two symmetrical halves. 3. **Determining Sexual Condition**: - The second symbol indicates a **bisexual condition**, meaning the flower contains both male (androecium) and female (gynoecium) reproductive parts. 4. **Analyzing Sepals**: - The symbol 'K' represents the **calyx** (sepals), and 'K5' indicates there are **five sepals** present. The term **gamosepalous** suggests that these sepals may be fused. 5. **Analyzing Petals**: - The symbol 'C' represents the **corolla** (petals). The notation '1 + 2 + 2' indicates a specific arrangement of petals: - 1 standard petal, - 2 wing petals, - 2 united petals (keel). - This arrangement is known as **vexillary aestivation**. 6. **Examining Androecium**: - The symbol 'A' represents the **androecium** (male parts), with '9 + 1' indicating a **diadelphous condition**, meaning there are two groups of stamens: one group with 9 fused and one single stamen. 7. **Examining Gynoecium**: - The symbol 'G1' indicates the **gynoecium** (female part) is **monocarpillary**, meaning there is one carpel. 8. **Evaluating Options**: - Now, we need to evaluate the provided options based on the analysis: - **Option 1**: Incorrect due to the mention of monoadelphous condition. - **Option 2**: Incorrect because it states unisexual instead of bisexual. - **Option 3**: Correct as it accurately describes all components of the floral formula. - **Option 4**: Incorrect because it states united sepals, which are not fused. ### Conclusion: The correct explanation of the floral formula corresponds to **Option 3**, which accurately describes the characteristics of the flower. ---
Promotional Banner

Topper's Solved these Questions

  • FAMILIES OF FLOWERING PLANTS

    DINESH PUBLICATION ENGLISH|Exercise CYG|10 Videos

  • FAMILIES OF FLOWERING PLANTS

    DINESH PUBLICATION ENGLISH|Exercise BRAIN TEASERS -II|97 Videos

  • FAMILIES OF FLOWERING PLANTS

    DINESH PUBLICATION ENGLISH|Exercise BRAIN TEASERS -II|97 Videos

  • EXCRETORY PRODUCTS AND THEIR ELIMINATION

    DINESH PUBLICATION ENGLISH|Exercise Check your graps|10 Videos

  • FLOWER

    DINESH PUBLICATION ENGLISH|Exercise MULTIPLE CHOICE|258 Videos

Similar Questions

Explore conceptually related problems

What is the correct explanation of the non - reducing property of sucrose ?

Assertion (A): I_(2) can displace Cl_(2) form NaClO_(3) . Reason (R ): I is more electronegative than CI. If both (A) and (R) are correct, and (R) is the correct explanation of (A) If both (A) and (R) are correct, but (R) is not the correct explanation of (A). If (A) is correct, but (R) is incorrect. If (A) is incorrect, but (R) is correct.

Assertion (A): The flourine has lower reactivity. Reason (R ): F-F bond has low bond dissociation energy. If both (A) and (R) are correct, and (R) is the correct explanation of (A) If both (A) and (R) are correct, but (R) is not the correct explanation of (A). If (A) is correct, but (R) is incorrect. If (A) is incorrect, but (R) is correct.

Assertion (A) : Galvanized iron is protected from Rusting. Reason (R): Zn is less reactive than Fe . (a)If both (A) and (R) are correct, and (R) is the correct explanation of (A) . (b)If both (A) and (R) are correct, but (R) is not the correct explanation of (A) . (c)If (A) is correct, but (R) is incorrect. (d)If (A) is incorrect, (R) is correct.

Assertion: A reaction cannot become fast by itself unless a catalyst is added. Reason: A catalyst always increases the speed of a reaction. (a)If both (A) and (R) are correct, and (R) is the correct explanation of (A) (b)If both (A) and (R) are correct, but (R) is the correct explanation of (A). (c)If (A) is correct, but (R) is incorrect. (d)If (A) is incorrect, but (R) is correct.

Assertion: La should be the f-block element according to Aufbau principle. Reason: 57th electron exceptionally enters in 5d orbital. If both (A) and (R) are correct and (R) is the correct explanation of (A). If both (A) and (R) are correct, but (R) is not the correct explanation of (A). If (A) is correct, but (R) is incorrect. If (A) is incorrect but (R) is correct.

Assertion (A) : In sodium chloride crystal, the coordination number of Na^(o+) IS 6 . Reason (R ) : The sodium atom is smaller than chloring atom. a.If both (A) and (R) are correct, and (R) is the correct explanation of (A) b.If both (A) and (R) are correct, but (R) is not the correct explanation of (A) c.If (A) is correct, but (R) is incorrect. d.If both (A) is incorrect, but (R) is correct.

Assertion(A): Physical adsorption of milecules on the surface requires activation energy. Reason(R): Because the bonds of adsorbed molecules are broken. (a)If both (A) and (R) are correct, and (R) is the correct explanation of (A) (b)If both (A) and (R) are correct, but (R) is the correct explanation of (A). (c)If (A) is correct, but (R) is incorrect. (d)If (A) is incorrect, but (R) is correct. S

Assertion(A): Fruit formation process shows increase in the rate with passage of time. Reason(R): Hydrolysis of these ester is homogeneous autocatalytic reaction. (a)If both (A) and (R) are correct, and (R) is the correct explanation of (A) (b)If both (A) and (R) are correct, but (R) is the correct explanation of (A). (c)If (A) is correct, but (R) is incorrect. (d)If (A) is incorrect, but (R) is correct.

Assertion (A) : Group- 15 -doped crystal of Si are called n -type semiconductors. Reason (R ) : Neutrons are responsible for the semi-conducting properties. (a)If both (A) and (R) are correct, and (R) is the correct explanation of (A) (b)If both (A) and (R) are correct, but (R) is not the correct explanation of (A) (c)If (A) is correct, but (R) is incorrect. (d)If both (A) is incorrect, but (R) is correct.

DINESH PUBLICATION ENGLISH-FAMILIES OF FLOWERING PLANTS-RQ
  1. What characters are associated with bean plant I. Cup-shaped thalamus....

    Text Solution

    |

  2. There are 25 flowers in an inflorescence of Allium. Each anther lobe o...

    Text Solution

    |

  3. Identify the correct pair of characters in physalis I. Petiole adnate ...

    Text Solution

    |

  4. Observe the floral diagram and choose and the correct floral formula

    Text Solution

    |

  5. What is correct explanation of

    Text Solution

    |

  6. Which is characteristic feature of androecium of Pisum sativum

    Text Solution

    |

  7. Identify the characters of mustard, Chilli, Cauliflower respectively

    Text Solution

    |

  8. Identify the wrong pair of statements I. Number of stamens in 5 flow...

    Text Solution

    |

  9. Identify the set of characteristic related to plants belonging to fami...

    Text Solution

    |

  10. Consider the following characters with respect to gynoecium of Fabacea...

    Text Solution

    |

  11. Which of the following are characteristic features of solanceae (a) ...

    Text Solution

    |

  12. The floral formula of the plants belonging to the family Fabaceae is

    Text Solution

    |

  13. Select the wrongly matched pair

    Text Solution

    |

  14. The character associated with the plant in which pollintion is by Tage...

    Text Solution

    |

  15. In a flower of a plant, the number of carpels is equal to number of in...

    Text Solution

    |

  16. In the floral formula, o+ stands for

    Text Solution

    |

  17. Iberis amora is useful for

    Text Solution

    |

  18. Onion belongs to the family

    Text Solution

    |

  19. The given symbols of floral parts indicate the conditions of

    Text Solution

    |

  20. Which of the following is not a characteristic feature of fabaceae

    Text Solution

    |