Question

Define actinomorphic.

Answer 1

Hint: ‘’The flowers’’ are the reproductive component of the angiosperms. Floral symmetry explains whether, and how, a flower, in particular its perianth, can be parted into two or more identical or mirror-image parts. Uncommonly, flowers may have no symmetry of axis at all, because their halves are spirally arranged. Actinomorphic is a type of floral symmetry. ‘Actinomorphic’ means star-shaped and radial. Actinomorphic flowers own radial symmetry.

Complete answer:
We all know that When a flower can be partitioned into two equal radial halves in any radial plane passing by the centre. It is said to be ‘Actinomorphic’.
Actinomorphic flowers can be split into three or more twin sectors. They are related to each other by rotation about the centre of the flower. Typically, every sector might possess one tepal or one petal and one sepal and so on. It may or may not be practicable to divide the flower into symmetrical halves by the alike number of longitudinal planes passing through the axis. These flowers are also called ‘radially symmetrical’ or ‘regular flowers’.
The examples of ‘The Actinomorphic flowers’ are ‘The lily’ (Lilium, Liliaceae), ‘The buttercup’ (Ranunculus, Ranunculaceae). Mustard, datura, chilli is also an example of the actinomorphic.

Note:
This Actinomorphic in floral symmetry. In regular flowers, any line drawn by the centre will divide the flower into two same halves. Actinomorphic meaning they can be divided into 3 or more identical sectors which are related to each other by rotation about the centre of the flower. These are important to remember that there is another bilateral symmetry, which is called ‘Zygomorphic’. They can be divided into two similar halves only in one particular vertical plane. Example of zygomorphic is a pea, beans, Gulmohar, etc. Actinomorphic flowers are the character of the basal angiosperm and zygomorphic flowers are a derived character/evolved many times.