Biology Bioenergetics BUMHS 2022
PMDC Verified Question 46 of 67
Maximum photosynthesis occurs when:
A
Blue light is given to the plant
B
Red light is given to the plant
C
Green light is given to the plant
D
Yellow light is given to the plant
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: Blue light is given to the plant
Concept:

Photosynthetic pigments, particularly chlorophyll a and b, have specific absorption peaks that determine the rate of photosynthesis across different wavelengths.

Solution:

  • Chlorophyll absorbs blue and red light most effectively.
  • While both drive high rates of photosynthesis, blue light is absorbed at a slightly higher maximum capacity by the combined action of chlorophylls and accessory pigments (carotenoids).


Why other options are incorrect:

  • Green and yellow light are mostly reflected or transmitted, leading to minimal photosynthetic activity.

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

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