Autotrophic mode of nutrition is the mode of nutrition in which organisms make their own food by
converting simple inorganic materials (like carbon and water) into organic compounds(like glucose)
PHOTOAUTOTROPHIC
Anotações:
They use sunlight as their source of energy.
Example: plants, blue green bacteria, some bacteria, some protists(like euglena, diatoms)
CHAEMOAUTOTROPHIC
Anotações:
They use chemicals as a source of energy.
Example: Iron bacteria, Sulphur bacteria, Nitrifying bacteria
HETEROTROPHIC
Heterotrophic mode of nutrition is the nutrition in which organisms can not create their own food
and depend on autotrophs for their food directly or indirectly.
SAPROTROPHS
They obtain food from dead and decay.
Mode of intake is absorptive
Digestion occurs outside (extracellular)
PARASITIC
They derive their food from a living host.
Based on amount of nutrients required from host
COMPLETE
Get all the required nutrients from the host
Example: Cascutta
PARTIAL
Get some required nutrients (like nitrogen) from the host.
Example: Santalum, Mistletae
Based on place of living
ECTOPARASITE
outside the host
Example: lice, leech, mosquito
ENDOPARASITE
inside the host
Example: Tapeworm, Roundworm
HOLOZOIC
engulf solid food
The holozoic nutrition is that nutrition in which an organism takes the complex organic food
materials into its body by the process of ingestion, the ingested food is digested and then
absorbed into body cells of organisms.