Energy flow Flashcards
name a producers?
a plant because it can produce food through photosynthesis
what are consumers?
animals that get their food through other organisms
what does trophic mean?
feeding
what can food chains be linked to form?
food webs
what is another sentence for saying; energy is passed from one organism to another?
from one trophic level to another
name a plant that can start off a food chain
algae
what do badgers eat when they are primary consumers?
seeds
what do badgers eat when they are secondary?
earth worms
how can organisms at different trophic levels be counted?
a pyramid of numbers (pyramid of biomass)
what is an animal that eats plants called?
herbivores
what is used in a pyramid of biomass?
the mass of organism is used
what can give a pyramid of biomass odd numbers?
if there are large consumers or if a small parasite lives on a large animal
why does a pyramid of biomass always show a pyramid shape?
because of the large mass of the producer or the small mass of parasite
what are animals called that eat meat and plants?
omnivores
what are omnivores good at?
fitting into more than one trophic level
how do you find the dry mass of an organism?
the animal or plant needs to be placed in a warm oven until all the water has been lost from it. This is not possible with living organisms so it has to be estimated
what would happen if the number of one species changed?
another species would change
how does energy enter a wood chain?
through photosynthesis.
how does energy flow through a food chain?
as an animal feeds
as energy flows through a food chain what is some of it used for?
growth
finish this sentence,,, at each trophic level as much as 90% is transferred into…
other less useful forms such as heat from respiration, egestion and excretion
how can the energy lost, be used in other food chains?
faeceas and uneaten parts can be used by decomposers for other food chains
what does the shape of a pyramid of biomass show?
that energy level decreases with increasing trophic level
write the equation for efficiency in a pyrami of biomass
efficiency = energy use for growth (dvided) energy supplied x 100
