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Which of the following is NOT an agent of dispersal of seeds?
Animal
Sunlight
Wind
Water
Sunlight
Sunlight is a non-agent of seed dispersal; it provides light energy for photosynthesis but does not physically transport seeds. Seed dispersal relies on physical agents like wind (anemochory), water (hydrochory), and animals (zoochory) to transport seeds away from the parent plant.
Sunlight is a non-agent of seed dispersal; it provides light energy for photosynthesis but does not physically transport seeds. Seed dispersal relies on physical agents like wind (anemochory), water (hydrochory), and animals (zoochory) to transport seeds away from the parent plant.
Botanical Classification & Plant Physiology (Angiosperm Reproduction & Ecological Adaptation)
Anemochory refers to seed dispersal by wind (e.g., Dandelion, Calotropis).
Hydrochory refers to seed dispersal by water bodies (e.g., Coconut, Water Lily).
Zoochory refers to seed dispersal by animals, birds, or humans (e.g., Xanthium, Cherry).
Sunlight serves as an energy source for photosynthesis and regulates photoblasty (light-dependent seed germination), but lacks physical force to move seeds.
Explosion or Autochory is another agent/mechanism where pods burst open mechanically to scatter seeds (e.g., Pea, Balsam).
Wrong Options: Options A (Animal), C (Wind), and D (Water) are established abiotic and biotic natural agents of seed dispersal.
B is correct тАФ Sunlight is an energy source for growth, not a physical vector for seed dispersal.
Questions on biological terminology often test specialized terms: Anemochory (Wind), Hydrochory (Water), Zoochory (Animals), and Autochory (Self/Explosion). Memorize these root words for Biology sections.
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