BIO325H5 Lecture Notes - Lecture 2: Centroid, Bivalvia, Scallop
Document Summary
Evolved function: a part that evolved to foster survival or reportuction. Structural adaption: used to an end of increased fitness. Multiple systems are coming together to increase flight fitness: bones, feathers, aerofoil wing shape, a nontidal repository system, air sacs. Some things become vestigial and has no consequence to anything (like nipples and shit) Arthropods have noisy parts since they all hit each other (think of a knight in armor. Ritualization: attracting mates via a process of movements or adpations: that is an incidental effect not selected for, its been selected for and adapted by the wings, stridulation: production of sound through frictional contact by exoskeleton. It"s the part within the head that is above the mandibles. You could say that it"s the skull of the grasshopper. The inflections of the ectoderm are where the apodemes (arms) come from. All made from chitin fusing internally into the body of the tentorium.
