Photoperiodism in Defoliated Plants — NEET Biology
📚 Practice ConceptWould a defoliated plant respond to photoperiodic cycle? Why?
Assertion (A): Plant growth regulators have different functional roles. Reason (R): Growth promoting PGRs respond to wounds and stresses while stress response PGRs promote growth.
View solution & NCERT explanation
Correct answer: C — If assertion is true but reason is false.
NCERT confirms PGRs have different roles (Assertion true). However, NCERT states “One group of PGRs are involved in growth promoting activities. The PGRs of the other group play an important role in plant responses to wounds and stresses.” The Reason swaps the functions - growth promoters promote growth, stress response PGRs handle stress, not vice versa.
What does NCERT say about Would defoliated plant respond?
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.