Download Zoology animals study topics and more Study notes Zoology in PDF only on Docsity!
Animal Diversity Notes
Key Biology Concepts
Protostomes/Deuterostomes Difference based on: type of embryo cleavage fate of blastopore ontogeny of coelom (schizocely vs enterocely)
Tradeoffs of Ectothermy Disadvantages: o Activity limited by external temperature o Requires behavioural adaptations for finding thermal microenvironments (basking in sun or finding cool refuge) o Become inactive for part of the year o Limitations on latitudinal range (not as far north or south as endotherms)
Advantages: o High efficiency of converting ingested food to biomass o Can thrive in ecosystems of low productivity (deserts, hot and dry) o Can survive with low metabolic rate
Purposes of Migration broadens the resource base, tracks available food high latitudes have longer days in summer, allowing extended foraging maintains relatively constant temperature by going tropics as winter sets in prevents permanent predation pressure in one location
Advantages of the Coelomate Body Plan Cavity can function for circulation, waste disposal, and gamete storage and release Enables the development of a hydrostatic skeleton Provides cushioning for the digestive tract Muscular movements of the digestive tract isolated from the outer body wall and skeletal muscular movements
Advantages of Metamerism Improved efficiency of motion using hydrostatic skeleton Independent nervous control and movement of segments Architectural redundancy allows specialisation of segments as well as survival/regeneration when segments are lost
Modes of Development
Timeline of Evolution
Essential Diagrams
Cladograms
Key Animal Diagrams
