Question : Which of the following statements is correct? I. When any plane passing through the central axis of the body divides the organism into two identical halves, it is called radial symmetry. II. Where the body can be divided into identical left and right halves in only one plane, exhibit bilateral symmetry.
Option 1: Only I
Option 2: Only II
Option 3: Both I and II
Option 4: Neither I nor II
Correct Answer: Both I and II
Solution : The correct option is Both I and II.
Radial symmetry is a type of symmetry that is characterised by a plane that passes through the central axis of an organism's body, dividing it into two identical halves. This type of symmetry is commonly seen in organisms such as jellyfish and sea anemones. On the other hand, bilateral symmetry is when an organism can be divided into two identical left and right halves in only one plane. This type of symmetry is observed in many animals including humans.
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