Pollen Compatibility and Pistil Recognition — NEET Biology
📚 Practice ConceptPollination does not guarantee the transfer of the right type of pollen (compatible pollen of the same species as the stigma). Often, pollen of the wrong type, either from other species or from the same plant (if it is self-incompatible), also land on the stigma. The pistil has the ability to recognise the pollen, whether it is of the right type (compatible) or of the wrong type (incompatible). If it is of the right type, the pistil accepts the pollen and promotes post-pollination events that
Match the following types of pollination / floral conditions with their correct description: Column I (Types) 1. Autogamy 2. Geitonogamy 3. Xenogamy 4. Cleistogamy 5. Chasmogamy Column II (Description) A. Flowers remain closed; ensures obligate self-pollination without external agents B. Pollen transfer within the same flower; requires synchrony of anther and stigma C. Cross-pollination between two genetically different plants D. Flowers open; expose anthers and stigma, permitting self or cross-pollination E. Pollen transfer from one flower to another flower of the same plant
View solution & NCERT explanation
Correct answer: B — 1-B, 2-E, 3-C, 4-D, 5-A
Autogamy → B: Pollination occurs within the same flower (self-pollination) Geitonogamy → E: Pollen transfer occurs between different flowers of the same plant. Xenogamy → C: Pollen transfer occurs between flowers of different plants of the same species, ensuring genetic variability. Cleistogamy → D: Cleistogamous flowers never open and thus always undergo self-pollination. Chasmogamy → A: Chasmogamous flowers open at maturity, exposing reproductive parts, allowing either self or cross-pollination.
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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.