PSYC 1010 Lecture Notes - Pax6, Disjunct Distribution, Exponential Growth

• School: York University
• Department: Psychology
• Course: PSYC 1010
• Professor: Doug Mc Cann

Document Summary

Biodiversity: number of species of organisms. Cell smallest form of live that can live and reproduce. Multicellular organism individual with interdependent cells. Population individuals of same species in same area. Community populations of all species in same area. Ecosystem all communities in shared physical environment. Biosphere all regions of earth that sustain life. Autotrophs: self nourishing, most plants, synthesize c using co2. Heterotrophs: all animals, obtain c from living hosts or from organic molecules in products, wastes, or remains of dead organisms. Chemotrophs: chemical nourishment, obtain energy through oxidation of inorganic or organic substances. Modes of nutrition among living species: chemoautotrophs, chemoheterotrophs, photoautotrophs, photoheterotrophs. Selection: force or phenomenon effects survival of individuals, large population exposed to lethal factor -> only resistant individuals survive to reproduce, resistance heritable, key factors: selective force & capacity for explosive population growth. Evolution: gradual change in the characteristics of population over time.