Choice Assay (IMAGE) Max Planck Institute for Chemical Ecology Caption A choice assay revealed that the moth kept its proboscis much longer in the parts of the flower that had a scent. Credit Alexander Haverkamp / Max Planck Institute for Chemical Ecology Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.