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  4. The mirror image halves of the animal with identical geometrical design are called

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Q. The mirror image halves of the animal with identical geometrical design are called

NTA AbhyasNTA Abhyas 2020

Solution:

The concentration of sense organs, nervous control, etc., at the anterior end of the body, forming a head and brain, both during evolution and in the course of an embryo's development is known as cephalization. Cephalization is associated with bilateral symmetry. In bilaterally symmetrical animals, the body parts are symmetrically arranged in pairs and equidistant from the median sagittal plane. The animals of this symmetry can be cut into two anti-meres in the median sagittal plane. Animals like annelids, arthropods, etc., exhibit bilateral symmetry.