Quantcast

Latest Silke Allmann Stories

b61a1775add0aa40d62290aaa8f578811
2010-08-26 23:34:48

The dilemma for tobacco hornworm larvae: By feeding on tobacco leaves they unintentionally and rapidly transform plant substances into attractant signals that betray their location to their own natural enemies -- with lethal consequencesPlants have developed a sophisticated defense system. They can not only directly fend off herbivores by producing toxins, but also do so indirectly by emitting odorant molecules into the atmosphere that are perceived by predatory insects; these predators are...


Word of the Day
call-note
  • The call or cry of a bird or other animal to its mate or its young.
'Call-note' is newer than 'bird-call,' which originally referred to 'an instrument for imitating the note of birds' but now also refers to 'the song or cry of a bird.'
Related