Self-Incompatibility & Reproductive Isolation — NEET Biology
📚 Practice ConceptWhat is self-incompatibility? Why does self-pollination not lead to seed formation in self-incompatible species?
Assertion (A): Fruit formation typically requires fertilisation to occur. Reason (R): Some species can develop fruits without fertilisation through parthenocarpy.
View solution & NCERT explanation
Correct answer: B — If both assertion and reason are true but reason is not the correct explanation of the assertion.
NCERT states “in most of the species, fruits are the results of fertilisation” - Assertion true about typical requirement. NCERT also states “there are a few species in which fruits develop without fertilisation” (parthenocarpy) - Reason true. However, the Reason doesn’t explain why fertilisation is typically required; it presents the exceptional contrasting case.
What does NCERT say about What self-incompatibility Why does?
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.