Limiting Factors in Photosynthesis — NEET Biology
📚 Practice ConceptThe external factors would include the availability of sunlight, temperature, CO₂ concentration and water. As a plant photosynthesises, all these factors will simultaneously affect its rate. Hence, though several factors interact and simultaneously affect photosynthesis or CO₂ fixation, usually one factor is the major cause or is the one that limits the rate. Hence, at any point the rate will be determined by the factor available at sub-optimal levels.
Why are light and temperature considered external factors?
View solution & NCERT explanation
Correct answer: D — They originate from the environment
These factors come from outside the plant body.
What does NCERT say about external factors would include?
Has this concept appeared in NEET?
Which chapter is this from?
Through deep analysis of NEET and NTA, 176 of the 180 ReNEET 2026 (June 21) questions were already in the MedicNEET question bank before the exam.
176/180MedicNEET's Biology question bank is built from the same NCERT lines NTA picks repeatedly. Not random MCQs — questions crafted exactly like NTA crafts them.