Question

Floral formula of tomato/tobacco is
(a)$\bigoplus { K }_{ 4-5 }{ A }_{ 10 }{ G }_{ (2) }$
(b)$\bigoplus { K }_{ 2+2 }{ C }_{ 4 }{ { A }_{ 2+4 }G }_{ 1 }$
(c)$\bigoplus { P }_{ 2 }{ { A }_{ 3 }G }_{ 1 }$
(d)$\bigoplus { K }_{ (5) }{ C }_{ (5) }{ A }_{ (5) }{ G }_{ (2) }$

Answer 1

Hint: The symbolic as well as the numeric representations of different parts of a flower is known as floral formulae. It tells about the number of organs, symmetry type, level of ovary, presence of fusions, corolla, calyx, androecium, and gynoecium.

Complete answer:
Tomato and tobacco are the species which belong to the large flowering plant family Solanaceae also known as potato family. It is a bisexual flower and is actinomorphic (radial symmetry) with 5 sepals and are fused, 5 petals that are fused, 5 stamens that are epipetalous (stamens attached to petals) and 2 carpels with superior ovary and axile placentation.
So, the correct answer is 'Ꚛ${ K }_{ (5) }{ C }_{ (5) }{ A }_{ (5) }{ G }_{ (2) }$'.

Note: While writing the formula, start with bract and bracteole, followed by symmetry and sexuality of flowers and finally specifying the floral parts that are K (calyx or sepals), C (corolla or petals), A (androecium or stamens) and G (gynoecium or carpels). To designate the numbers of parts of each of the mentioned floral parts numbers such as 1, 2, 3, 4, 5 are used after corresponding symbols. The above numeral value is placed in the bracket if the parts of the flower are fused. If the parts are free then it is placed as it is. The number of parts is split into two values if it is a bilabiate structure. The admonition of members is indicated by joining the top of symbols of different whorls by an arc or curved line. A break in the alternation of parts is represented by a vertical line between symbols of two floral cycles. The position of the ovary if it is half inferior or superior, is indicated by placing a horizontal line in front or above the symbol of gynoecium.