Class 12 · Ecosystem

Photosynthetically Active Radiation — NEET Biology

📚 Practice Concept
📖 NCERT Source

What is the percentage of photosynthetically active radiation (PAR) in the incident solar radiation? (a) 100% (b) 50 % (c) 1-5% (d) 2-10%

NCERT Biology · Class 12 · Chapter 12 · Paragraph 45
Practice This Concept
QuestionPractice Question

What percentage of incident solar radiation is photosynthetically active?

📖 Solution & NCERT Explanation
View solution & NCERT explanation

Correct answer: D Less than 50%

NCERT specifies that less than 50% of incident solar radiation is in the PAR range.

❓ Frequently Asked Questions
What does NCERT say about What percentage photosynthetically active?
What is the percentage of photosynthetically active radiation (PAR) in the incident solar radiation? (a) 100% (b) 50 % (c) 1-5% (d) 2-10%
Has this concept appeared in NEET?
Practice this NCERT concept with questions on MedicNEET.
Which chapter is this from?
Ecosystem, Class 12 NCERT Biology.

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.

176/180
of the ReNEET 2026 paper (all subjects) was already in the MedicNEET question bank

MedicNEET's Biology question bank is built from the same NCERT lines NTA picks repeatedly. Not random MCQs — questions crafted exactly like NTA crafts them.

176 of 180 ReNEET 2026 questions traced to MedicNEET17,000+ Biology questionsHindi + English
Free to start · Hindi + English · 43,000+ questions · NEET 2026 pattern
Related Concepts from Ecosystem
📘Practice all 23 NEET PYQs from Ecosystem