Biology 5090 · O Level · Mammalian sense organs

Mammalian sense organs — practice question

The diagram presents a front view of the eye parts that are involved in forming a clear image of objects at near and far distances. What are structures 1 and 2?

  • Astructure 1: ciliary muscles; structure 2: suspensory ligaments
  • Bstructure 1: iris; structure 2: pupil
  • Cstructure 1: pupil; structure 2: iris
  • Dstructure 1: suspensory ligaments; structure 2: ciliary muscles

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