| Column-I | Column-II | ||
| A | Opuntia | 1 | Stem thorns |
| B | Asparagus | 2 | Phylloclades |
| C | Citrus | 3 | Cladodes |
| LIST-I (Characteristic, feature) | LIST-II (Family) |
|---|---|
| A. Monoadelphous stamen | I. Malvaceae |
| B. Cremocarp | III. Apiaceae |
| C. Gynobasic style | II. Lamiaceae |
| D. Capitulum | IV. Asteraceae |
Identify the types of aestivation in corolla labelled as 'a', 'b', 'c' and 'd'
