Question

Read the following matches regarding the placentation. Which of the following is correct?

(i) Dianthus - Free central
(ii) Cannabis - Marginal
(iii) Sunflower - Basal
(iv) Cucurbita - Axile

• A. (i) and (iii)
• B. (ii), (iii) and (iv)
• C. (ii) and (iii)
• D. (i), (ii) and (iii)

Answer 1

The correct option is A (i) and (iii)

Dianthus - Free central

Free central placentation is found in multicarpellary syncarpous pistil with a single locule. Placenta is present inthe centre of the ovary forming a central column and is free from the ovary wall. For example - Dianthus.

Sunflower - Basal

In basal placentation, pistil is polycarpellary and syncarpous with a unilocular ovary. The ovary contains only a single placenta at the base with a single ovule, e.g, marigold, sunflower, etc.,