question_answer 20)

  Human eyeball consists of three layers and it encloses (a) lens, iris, optic nerve                                                (b) lens, aqueous humor and vitreous humor (c) cornea, lens, iris                                                         (d) cornea, lens, optic nerve

Answer:

                  (b) Human eye ball consist of three, i.e., layers sclera, choroid and retina and these layer enclose lens, aqueous humor and vitreous humor.