Question

The correct floral formula of soyabean is

• A.

  

• B.

  

• C.

  

• D.

  

Answer 1

The Correct Option is B

The question asks for the correct floral formula of soybean. Soybean, scientifically known as Glycine max, belongs to the Fabaceae family, also known as the legume or pea family. To understand the floral formula of soybean, it is essential to know the general floral characteristics of this family:

• Calyx: There are typically 5 sepals, which may be fused.
• Corolla: It generally consists of 5 petals forming the characteristic papilionaceous shape (one standard, two wings, and a keel formed by two petals).
• Androecium: It is usually a group of 10 stamens, which can be either diadelphous (9 fused + 1 free) or monadelphous.
• Gynoecium: Typically consists of a single carpel, forming a superior ovary.

Based on these characteristics, the typical floral formula for the Fabaceae family, especially for a plant like soybean, is:

In this floral formula:

• The symbol ✳ represents actinomorphic symmetry.
• The superscript numbers next to the letters (K, C, A, G) indicate the number of parts involved:
• K represents the calyx with 5 sepals, which may be fused (brackets imply fusion).
• C represents the corolla with 5 petals.
• A stands for androecium with 10 stamens, often arranged in a (9)+1 fashion signaled by brackets.
• G indicates the gynoecium with a superior ovary comprising 1 carpel (indicated by a single line or letter '1').