nutrition Flashcards
what is autotrophic nutrition?
make own organic food from simple inorganic materials
what are the two types of autotrophs?
phototrophic and chemoautotrophic
what are photoautotrophics?
uses light energy for synthesis of food
what are chemoautotrophics?
uses energy from chemical reactions for synthesis of food
what is heterotrophic nutrition?
consumes complex organic molecules produced by autotrophs
what are the different types of heterotrophs?
saprotrophics, holozoic and parasitic nutrition
what is holozoic nutrition?
ingest food, digest it and egest the indigestible remains.
what are detrivores?
feed on dead and decaying material
what is saprotrophic nutrition?
feed by extracellular digestion and absorb soluble products. feed on decaying matter
what type of nutrition are decomposers and why is this important?
saprotrophs - for decaying leaf litter and recycling nutrients such as Nitrogen. e.g. Rhizopus
what is a parasite?
an organism that lives in another organism, at the expense of the host
