chap 29 notes

chap 29 notes - Intro to Animal Diversity *Body plan= basic...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Intro to Animal Diversity *Embryonic development 1) Zygote undergoes cleavage (mitotic cell divisions) 2) Zygote develops into ball of cells, blastula 3) These cells undergo gastrulation: forming and segregating layers of tissue, germ layers Animals evolved in marine environments Buoyancy of sea: support & large water volume = temp stability Plankton = ready source of food Advantages: provides food, washes away waste Disadvantages: strong currents can sweep away animals Freshwater habitat : More difficult Hypotonic to tissue fluids of animals water moves into animal by osmosis Osmoregulation (removing excess water while retaining salt) req’s shitload of energy Basically, fresh water habitat is the ghetto, hard to live in nigga. Living on land is even harder:
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 01/24/2012 for the course 832 335 taught by Professor Abruzzi during the Spring '10 term at Rutgers.

Page1 / 2

chap 29 notes - Intro to Animal Diversity *Body plan= basic...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online