A B D C Long floral tubes with hidden nectar

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Presentation transcript:

- - - - A B + + + D + + + C Long floral tubes with hidden nectar Short floral tubes or open flowers with exposed nectar Sucrose + Invertase activity hydrolysis Glucose and Fructose - + + D Anthophor length might affect surface area of nectar droplet + - Osmolality Evaporation of water from nectar - + Hairs along anthophor + C Relation between activity times of flowers and temperature and humidity Silene viscosa 1 mm Sugar concentration - Diurnal flowers Might negatively affect nectar uptake by pollinators , due to increased viscosity, and in consequence pollinator attraction Nocturnal flowers