BIOL 1902 Final: Natural History – Exam Notes
6 Dec 2016
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Crab spiders hairs on their legs: ex. Teeth canines powered by temporalis: ex. Wolves killer larger prey by slash and shock : ex. Foxes use shake and break with their canines to kill prey: ex. Weasels bite into the cranium (brain case) 2 holes in the back of the head: ex. Modified body parts used as tools to capture prey. Feet/claws strong toes equipped with talons (modified claws) for capturing predators: ex. The outer toe is reversible: ex. Owls also have a reversible toe scales on underside of toes for grip. Fish specialist: modified bills tooth like projections on bills to catch fish. Ex. (common) merganser) some ducks: mammals that are hunters will use canines (teeth) to capture fish - canines require muscles, they are powered by the temporalis. Frogs use their tongue (called a tongue flick: the hyoid horns (process or apparatus) extend the tongue and sticky salvia on their tongues to help snap their prey.
