Question

Match List-I with List-II:

• A. (A)-(III), (B)-(I), (C)-(IV), (D)-(II)
• B. (A)-(I), (B)-(II), (C)-(III), (D)-(IV)
• C. (A)-(I), (B)-(III), (C)-(IV), (D)-(II)
• D. (A)-(III), (B)-(IV), (C)-(I), (D)-(II)

Hint:

Match plant responses to specific stimuli: light, gravity, touch, and day length.

Answer 1

The Correct Option is A

Phototropism is growth towards light (III), Geotropism is growth towards gravity/soil (I), Thigmotropism is plant response to touch (IV), and Photoperiodism is response to day length (II).

Answer 2

Alternate approach — Word-root analysis:
Each term can be decoded from its Greek roots to fix the match without recalling definitions directly. 'Photo-' means light and '-tropism' means directional growth response, so Phototropism is growth in response to a light stimulus, matching (III). 'Geo-' means earth, so Geotropism is the response to gravity, aligning with (I). 'Thigmo-' means touch, so Thigmotropism is the response to physical contact, matching (IV). 'Photoperiod' relates to the duration of light exposure controlling flowering and other cycles, matching (II).
Working purely from these roots and cross-checking against the four listed responses independently confirms the same pairing as direct recall, verifying option (A)-(III), (B)-(I), (C)-(IV), (D)-(II).