NEETBotanyMorphology of Flowering Plants
What is the definition of aestivation?
Options
- AThe study of plants and flowers
- BThe study of birds and their habitats
- CThe arrangement of sepals or petals in a floral bud with respect to the other members of the same whorl
- DThe study of insect behaviour
Correct answer
C. The arrangement of sepals or petals in a floral bud with respect to the other members of the same whorl
Step-by-step solution
The mode of arrangement of sepals or petals in floral bud with respect to the other members of the same whorl is known as aestivation. The main types of aestivation are valvate, twisted, imbricate and vexillary (Figure 5.11). When sepals or petals in a whorl just touch one another at the margin, without overlapping, as in Calotropis, it is said to be valvate. If one margin of the appendage overlaps that of the next one and so on as in china rose, lady’s finger and cotton, it is called twisted. If the margins of sep