Q160 / 200 · NEET 2023 (Manipur) · Zoology

Given below are two statements: Statement I : The nose contains mucus-coated receptors which are specialised for receiving the sense of smell and are called olfactory receptors. Statement II : Wall of the eye ball has three layers. The external layer is called choroid (dense connective tissue), middle layer is sclera (thin pigmented layer) and internal layer is retina (ganglion cells, bipolar cells and photoreceptor cells). In the light of the above statements, choose the correct answer from the options given below:

  • A
    Both Statement I and Statement II are true
  • B
    Both Statement I and Statement II are false
  • Correct answer
    C
    Statement I is true but Statement II is false
  • D
    Statement I is false but Statement II is true

Solution

Option (3) is the correct answer as Statement I is correct and Statement II is incorrect because the wall of the eye ball is composed of three layers. The external layer is composed of a dense connective tissue and is called the sclera. The middle layer, Choroid, contains many blood vessels and looks bluish in colour. The choroid layer is thin over the posterior $2 / 3$ of the eye ball and becomes thick in the anterior part to form the ciliary body. The innermost layer is the retina and it contains 3 layers of neural cellsfrom inside to outside-ganglion cells, bipolar cells and photoreceptor cells.

Hence, the correct answer is option: 'C'.

Relevant Questions