Question

Synandrous condition is found in
A. Sunflower
B. Gourd
C. Pea
D. Lemon

Answer 1

Hint:The Cucurbitaceae family includes many important species of plants like cucumber, squash, pumpkin, melon, watermelon, etc. The stamens of the Cucurbitaceae family are fused all through their length.

Complete answer:
The flower is the reproduction part of the plant. It can be classified according to the location or number of the stamens and the petals, the position of the calyx, the corolla and the androecium, and so on. When the stamens are bound to the petals, they are called epipetalous. When stamens are bound to the perianth, they are referred to as epiphyllous.

Flowers can also be categorised on the basis of stamen fusion. In the polyandrous type, the stamens remain free. The stamens are joined into one bundle in a monadelphous flower. In Diadelphous flowers, the stamens are divided into two bundles. A flower is said to be polyadelphous if the stamens are joined together into more than two bundles. In a synandrous flower, the stamen is fused along both their filaments and anthers.

In Pea, the stamens are 10 or 9 and are diadelphous or monadelphous. The posterior stamen is free and nine filaments are fused to form a sheath around the ovary. A lemon flower is polyadelphous, where the filaments are united and the anthers are free. In sunflower, the anthers are syngenesious, with the stamens fused together at their edges, forming a tube, and the filaments are free.
Members of Cucurbitaceae have all anthers as well as filaments united to form one group. Therefore, gourd is a plant whose flower exhibits synandrous condition.

Thus, the correct answer is option B i.e., B. Gourd.

Note:In plants, adelphous condition is seen where the anthers remain free and the filaments are united.Adelphous condition can be monadelphous, diadelphous or polyadelphous.