Question

Match the terms in Group I with their associated items in Group II. \[ \begin{array}{|c|c|} \hline Group I & Group II
\hline (P) \ \text{Scotopic vision} & (1) \ \text{Ability to see under low light condition using rod cells}
(Q) \ \text{Presbyopia} & (2) \ \text{Vision in bright light using cone cells}
(R) \ \text{Emmetropia} & (3) \ \text{Inability to focus on distant objects}
(S) \ \text{Photopic vision} & (4) \ \text{Ideal distance vision}
& (5) \ \text{Inability to focus on nearby objects}
\hline \end{array} \]

• A. P-1, Q-4, R-5, S-2
• B. P-4, Q-3, R-1, S-2
• C. P-1, Q-5, R-4, S-2
• D. P-4, Q-2, R-1, S-5

Hint:

Remember: Rod cells → Scotopic (dim light), Cone cells → Photopic (bright light), Emmetropia → Normal vision, Presbyopia → Old-age near-vision defect.

Answer 1

The Correct Option is C

Step 1: Scotopic vision.
Scotopic vision refers to vision under low light conditions using rod cells. \[ P \Rightarrow 1 \]

Step 2: Presbyopia.
Presbyopia is an age-related defect in which the eye lens loses elasticity, causing inability to focus on nearby objects. \[ Q \Rightarrow 5 \]

Step 3: Emmetropia.
Emmetropia means normal vision, i.e., ideal distance vision without refractive errors. \[ R \Rightarrow 4 \]

Step 4: Photopic vision.
Photopic vision refers to vision under bright light conditions using cone cells. \[ S \Rightarrow 2 \] \[ \boxed{P-1, \ Q-5, \ R-4, \ S-2} \]