Question

Didynamous condition is related to
A. Androecium
B. Inflorescence
C. Gynoecium
D. All of the above

Answer 1

Hint: The male reproductive organ of a flower is called stamen. According to the size of different stamens in a flower, they are classified as heterogeneous, tetradynamous and didynamous. Tetradynamous is a condition where six stamens are present in which four of them are uniformly longer than the others. The Didynamous condition contains four stamens disposed of in pairs of irregular length.

Complete answer:
Inflorescence is a cluster or group of flowers that are arranged on a stem composed of a complicated arrangement of branches or a main branch. Morphologically, it is the modified part of the shoot of the seed plants where flowers are formed.
Gynoecium is a collective term used to represent the parts of a flower which produce ovules and ultimately develop into seeds and fruit.
The male parts of the flower or androecium consists of the stamens each of which consists of another in which pollen is produced and a supporting filament.
Didynamous condition is found in androecium. The stamens in a flower are known as the androecium. The androecium forms a great variety of patterns in various species of plants and some of them are highly complex. It surrounds the gynoecium and later the perianth, if there is one, it surrounds the androecium. In didynamous conditions the stamen occurs in a shorter pair and a long pair.

Hence, the correct answer is option (A).

Note: The female part of the flower which is collectively known as gynoecium, consists of one or more pistils. Each of them consists of an ovary, having an upright extension, the style, on which stigma rests, the pollen-receptive surface. Each stamen consists of a filament joined with a connective tissue. Another can be single lobed or bilobed. Single lobed is known as monothecous anther and two lobed is known as dithecous anther. Tetradynamous condition occurs in Raphanus and Brassica. Similarly, didynamous condition is found in Salvia, Ocimum.