O Level Courses

Chapter 2: IGCSE O Level Biology Exam Tests

IGCSE O Level Biology MCQs - Chapter 2

Co-ordination and Response: Animal Receptor Organs Multiple Choice Questions PDF Download - 1

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Co-ordination & Response Animal Receptor Organs Questions & Answers PDF Download: MCQ Quiz 1

MCQ 1: Amount of light entering eye is controlled through

A) conjunctivitis
B) eyelids
C) eyelashes
D) iris

MCQ 2: In dim light, the circular muscles

A) contract
B) relax
C) denature
D) inactivate

MCQ 3: Eyeball is kept firm and refracting light through

A) aqueous humor only
B) vitreous humor only
C) saturated humor
D) aqueous and vitreous humor

MCQ 4: In the outer corner of the upper lid of eye, is the

A) lachrymal tear gland
B) naso-lachrymal duct
C) liberal palpebral ligament
D) orbital part

MCQ 5: Innermost layer of eyeball is

A) iris
B) retina
C) ciliary body
D) pupil

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MCAT Biology App (Android & iOS)