BIO325H5 Lecture Notes - Lecture 16: Phloem, Protractor
Document Summary
Aerosol impaction: removing particles from an air stream forcing gasses to make a sharp bend: larger particles cannot follow a certain stream so it goes another way (important in lungs. Shape of cicada"s face is determined by a cibarial pump; cicada is a fluid feeder that needs to create its own preassures to suck sap. Contractions of muscles move the sap up the throat via pressures. Stylets: modified tubes for sap transfer: they evolve one for when a pump is needed cause the fluid food is not itself under preasure. 2 channels: 1) for collecting sap 2) for lubricating the bundle with saliva. Each half of the blue one makes the salivary and food canals.
