adaptations for nutrition

Question 1

what is autotrophic nutrition?

Answer 1

using simple inorganic materials to produce complex organic molecules

Question 2

what is a photoautotroph?

Answer 2

uses light energy to convert simple inorganic materials into complex organic ones

chlorophyll used to absorb sunlight energy

Question 3

what is a chemoautotroph?

Answer 3

uses energy fromspecial methods of oxidisation, e.g. oxidisation oh hydrogen sulphide, to conevrt simple inorganic molecules into complex organic ones

Question 4

what is a heterotroph?

Answer 4

consumes complex organic molecules which are broken down to release energy

called consumers

Question 5

what is Holozoic nutrition?

Answer 5

organisms ingest solid/liquid food and then internally process it by ingestion, digestion, absorbtion, assimitation and then egestion

(includes nearly all animals)

herbivors, omnivore, carnivoures, and detrivoures

Question 6

what are saprophytes?

Answer 6

carry out external digestion, feed on dead/decaying matter by excreting enzymes onto food and then absorbing the soluble products of digestion across the cell surface membrane

all fungi & some bacteria

Question 7

what are parasites?

Answer 7

organisms that feed on or in other organisms
the parasite benefits by gaining nutrients at the expence of the host

they are highly specialised