01:119:100 Lecture Notes - Lecture 19: Rechargeable Battery, Primary Cell, Ground Tissue

• School: Rutgers University
• Department: Biological Science
• Course: 01:119:100
• Professor: Keating

Document Summary

Bio lecture 19 11/8/12 plant anatomy chapter 32 & 4. Plant cell: nucleus and organelles, central vacuole, 90% of volume of cell (mostly water, tonoplast, functions, growth increase in size when water is added to the vacuole i. Bundles of fiber in the cell wall (makes the cell wall strong: growing plant cell i. Ex: grit in pears, peach pit, walnut shell: fiber cells long, slender, tapered, bundles, found in wood and bark of flowering plants i. Water passes from 1 tracheid to another through pits: pit thin area in the tracheid cell wall (pit is not a hole) i. ii. Primary cell wall, but no secondary cell wall. Secrete cuticle covers surface or exterior walls. Slows down gas exchange: stomata minute pores each surrounded by 2 guard cells, co2, h2o vapor, o2, diffusion, trichomes outgrowths =hairs, functions. Ex: desert plants, aerial plants increase the reflection of light.