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IGCSE biology practice test MCQ: in dim light, circular muscles with choices contract, relax, denature and inactivate with online eLearning for international exams' preparation like SAT exam preparation. Free study guide is for online learning controlling entry of light quiz with MCQs to practice test questions with answers.
MCQs on Controlling Entry of Light Quiz PDF Download
MCQ. In dim light, circular muscles
MCQ. If surrounding light intensity is low
- the pupil becomes large
- the pupil contracts
- the pupil becomes upset
- the pupil relaxes