NEET BIOLOGY

Detailed explanation-1: -The Brassica flower can be cut into two equal halves from any plane. So it shows radial symmetry. These flowers are referred to as actinomorphic flowers. The other flowers given can be cut into two equal halves in only one plane (bilateral symmetry ), so they are called zygomorphic flowers.

Detailed explanation-2: -When the different members of each whorl are alike, the flower is regular and is referred to as actinomorphic, or radially symmetrical, as in the petunia, buttercup, and wild rose. Differences in size or shape of the parts of a whorl make the flower irregular (as in the canna and Asiatic dayflower).

Detailed explanation-3: -Flowers that have multiple lines of symmetry (like a starfish) are radially symmetrical, also called actinomorphic. Flowers with only a single line of symmetry (like you) are bilaterally symmetrical, also called zygomorphic.

Detailed explanation-4: -Actinomorphic flowers are also called radially symmetrical or regular flowers.

Detailed explanation-5: -Flowers have two kinds of symmetry. Symmetries are classified into two types: radial and bilateral. Actinomorphic flowers have radial symmetry and can be separated into two equal halves on any radial plane located at the center. The actinomorphic flowers include the lily and the buttercup.