BIOL 1902 Lecture 4: Lecture 4
15 Aug 2018
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Document Summary
Animals that are nocturnal have large eyes to see at night (whip-poor-will bird, red eyes) Eyes with lots of rods in the retina cones give sharp vision in day active animals rods in retina in night active animals {one cone activates one nerve cell/many rods activate one nerve} Glowing eyes mammals: reflective layer behind retina - tapetum lucidm (flying squirrel) Single species flock (sandpipers and other water birds) If they are feeding on something in large amounts then flocking can happen because no competition for food. In mixed flocks it works because different ways to eat the food and get it while different food (ex many birds in one tree) Dog strangling vine takes over trees and the sunlight and kills them. Plants invade barren landscapes to rapidly dominate and colonize them, they create and define most spaces. Leaves, stems, flowers and other floral parts defend them. 1st body armour: bark of trees, shrubs and bushes.
