Question
Biology Question on The Flower
Identify the type of flowers based on the position of calyx, corolla and androecium with respect to the ovary from the given figures (a) and (b).
(a) Epigynous; (b) Hypogynous
(a) Hypogynous; (b) Epigynous
(a) Perigynous; (b) Epigynous
(a) Perigynous; (b) Perigynous
(a) Perigynous; (b) Perigynous
Solution
In the perigynous condition, the gynoecium (female reproductive organ) is located in the center of the flower, while the other parts of the flower, such as the stamens, petals, and sepals, are positioned around it on the rim of the thalamus (receptacle).
All the floral parts (including stamens, petals, and sepals) are situated at the same level and appear to be attached to a common structure called the hypanthium. This arrangement contrasts with other flower types, such as hypogynous and epigynous flowers, where the position of the gynoecium is either above or below the other floral parts, respectively. In perigynous flowers, the ovary is typically superior (above the point of attachment of other parts).