Column X lists different types of ion channels and Column Y defines the nature/property of these channels.
Column X
A. Channelrhodopsin
B. Shaker-related potassium channels
C. Piezo ion channel
D. Acetylcholine receptor
Column Y
i. Voltage-gated
ii. Mechano-sensitive
iii. Ligand-gated
iv. Light driven
Which one of the following options represents all correct matches between Column X and Column Y?

Correct option is D

Correct Answer:
(d) A → iv, B → i, C → ii, D → iii
Explanation:
Channelrhodopsin is a light-driven ion channel used widely in optogenetics.
Shaker-related potassium channels are classic voltage-gated K⁺ channels.
Piezo channels respond to membrane stretch and are mechano-sensitive.
The acetylcholine receptor opens upon neurotransmitter binding, making it ligand-gated.
Information Booster :
· Ion channels are classified by the stimulus that opens them.
· Light-driven channels enable optical control of neuronal activity.
· Mechano-sensitive channels are essential for touch and pressure sensation.
· Ligand-gated channels mediate fast synaptic transmission.
Additional Information (Incorrect Options):
Options (a), (b), and (c) mismatch channel types with incorrect gating mechanisms.
Correct identification depends on recognizing the primary activation stimulus for each channel.