Question: 101. 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).
(1) (a) Epigynous; (b) Hypogynous
(2) (a) Hypogynous; (b) Epigynous
(3) (a) Perigynous; (b) Epigynous
(4) (a) Perigynous; (b) Perigynous
Answer: Option (4)
Explanation:
Flowers are classified as hypogynous, perigynous, or epigynous based on the relative position of calyx, corolla, and androecium with respect to the ovary.
In perigynous flowers, the ovary is superior and the calyx, corolla, and
androecium arise from the rim of a cup-shaped thalamus surrounding the ovary.
In figure (a), the ovary is surrounded by a cup-like thalamus,
and other floral whorls arise from its rim, indicating a perigynous condition.
In figure (b), a similar cup-shaped thalamus surrounds the ovary, and the calyx, corolla, and androecium arise from the rim, also indicating a perigynous condition.
Hence, both figures (a) and (b) represent perigynous flowers.