External Agents of Pollination — NEET Biology
📚 Practice ConceptPollination is the mechanism to achieve this objective. Transfer of pollen grains (shed from the anther) to the stigma of a pistil is termed pollination. Flowering plants have evolved an amazing array of adaptations to achieve pollination. They make use of external agents to achieve pollination. Can you list the possible external agents?
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
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