Question Details

Given below are two statements:


Statement I: In a floral formula ⊕ stands for zygomorphic nature of the flower, and G stands for inferior ovary.


Statement II: In a floral formula ⊕ stands for actinomorphic nature of the flower and G stands for superior ovary. In the light of the above statements, choose the most appropriate answer from the options given below:

Options

A

Both statement I and statement II are correct

B

Both statement I and statement II are incorrect

C

Statement I is correct but statement II is incorrect

D

Statement I is incorrect but statement II is correct

Show Answer

Correct Answer :

Option D

Statement I is incorrect but statement II is correct

Statement I is incorrect but statement II is correct

Solution :

To determine the correctness of the given statements, let us analyze the standard symbols used to represent floral features in a floral formula:

1. Flower Symmetry:
- The symbol ⊕ (a circle containing a plus sign) represents actinomorphic symmetry, which means the flower is radially symmetrical and can be divided into two equal halves along any radial plane.
- The symbols % or ↓ are used to represent zygomorphic symmetry, which means the flower is bilaterally symmetrical and can be divided into two equal halves in only one vertical plane.
Therefore, Statement I's claim that ⊕ stands for zygomorphic symmetry is incorrect, while Statement II correctly states that it stands for actinomorphic symmetry.

2. Position of the Ovary (Gynoecium):
- The letter G represents the gynoecium.
- A line placed underneath G (represented as G̱) denotes a superior ovary, indicating that the ovary is positioned above the attachment of other floral parts.
- A line placed above G (represented as G̅) denotes an inferior ovary, indicating that the ovary is positioned below the attachment of other floral parts.
Therefore, Statement I is incorrect in stating that G stands for an inferior ovary, whereas Statement II is correct in stating that G stands for a superior ovary.

Based on this analysis:
- Statement I is incorrect.
- Statement II is correct.

Hence, the correct option is Statement I is incorrect but statement II is correct.

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