KA9 Bio Flashcards
The sun is…
the source of energy to output biological systems
Producers convert ____ energy to _______ energy.
light, chemical
what are consumers??
organisms that gets its energy by eating others
what are primary consumers??
feeds on producers
what are secondary consumers??
feeds on primary consumers
what are decomposers??
organism that gets its energy from dead organisms or waste
trophic level:
position of organism on the food web
herbivore:
an animal that gets its energy from plants
tertiary consumer:
feeds on secondary consumer
quaternity consumer:
feeds on tertiary consumer
carnivore:
an animal that gets its energy by eating other animals
decomposers release ___ onto fod/waste to digest it and _____ the products of digestion (ie _____ from carbohydrates), _______ (proteins) and ______ and ______ (from lipids) which brings about decay.
enzymes, absorbs, gluclose, amino acids, glycerol, fatty acids
Decomposers benefit the ecosystem by..
1) removes dead organisms and waste
2) minerals are released
a food web is..
a net work of interconnected food chains (Shows relationship of organisms)
overharvesting:
taking more organisms that can be replaced by reproduction (ex: atlantic cod)
impacts of overharvesting:
1) unable to reproduce
2) can cause extinction
3) impaxts whole foundation
introduction of foreign species in a habitat:
non native species are introduced to habitat (ex: european rabbits)
impacts of introduction of foreign species in a habitat:
1) kill native species
2) complete the food
3) destroy habitats
energy enters the ecosystem as ____ energy.
light
it is passed along the food chain as ____ energy by _____.
chemical, feeding
energy leaves the ecosystem as _____ from ________.
heat, respiration
in food chains, trypically only ___% is passed onto the next organism.
10%
the other __% is lost from ____ through _______.
90%, heat, respiration
some parts of the organism is ____ (such as ___ or _____) or they are _______(_____)_.
uneaten, teeth/bones, indigestable (fibre)