Question

The floral formula is that of

A)Sunhemp
B)Tobacco
C)Tulip
D)Soybean

Answer 1

Hint: Floral formula is a means to depict the pattern of a flower using letters, numbers, and various characters, illustrating considerable knowledge about the flower in a portable aspect. It can depict specific variety or can be generalized to distinguish greater taxa, usually providing spectra of organ numbers.

Complete answer:
Let us analyse the given options to find out the correct answer.

Option A: Sunn Hemp refers to family Fabaceae. It exhibits actinomorphic flowers with 5 petals, 5 sepals, in 1+2+ (2) structure i.e. vexillary aestivation, 10 stamens and 1 carpel. This is an incorrect option.

Option B: Tobacco relates to family Solanaceae. It exhibits an actinomorphic flower with 5 petals, 5 sepals, 5stamens which are joined with petals i.e. epipetalous and 2 carpets. This is the correct option.

Option C: Tulip refers to family Liliaceae. It exhibits an actinomorphic flower with 3+3 stamens, 3+3 petals, and 3 carpels. This is an incorrect option.

Option D: Soybean relates to the family Fabaceae. It exhibits actinomorphic flowers with 5 petals, 5 sepals in 1+2+ (2) configuration i.e. vexillary aestivation, 10 stamens and 1 carpel. This is an incorrect option.

Hence, the correct answer is option (B)

Note: Floral formulae are a network to exemplify a flower’s configuration using distinct letters, numbers, and symbols, hence it is an easy way to illustrate salient characteristics of a flower. It represents the number of parts, floral proportion, significance and adnation, ovary posture and insertion. These formulae are helpful to know the factors of several angiosperm families.