Question

Describe the arrangement of floral members in relation to their insertion on thalamus.

Answer 1

Based on the position of the calyx, corolla and androecium in relation to the ovary on the thalamus, the flowers are divided into 3 types, namely hypognous, perigynous and epigynous. In hypogynous flowers, the ovary is superior as it is present on thalamus. The other floral parts are present below thalamus. Example includes china rose. In perigynous flowers, the ovary is half inferior. It is situated in the centre. The floral parts are present on the rim of the thalamus. Example includes rose. In epigynous flowers, the ovary is inferior. The thalamus is present around the ovary. Examples include cucumber.