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Radial symmetry is usually associated with

1. aquatic mode of life
2. lower grade of organisation
3. creeping mode of locomotion
4. sedentary mode of life

Correct answer: sedentary mode of life

Solution

Radial symmetry is common in organisms that are attached or largely immobile, because they receive stimuli from all directions equally. This fits a sedentary lifestyle better than active directional movement.

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