B18 - Organisms and their environment Flashcards
What is the trophic level of a producer?
1
What is the trophic level of a primary consumer?
2
What is the trophic level of a secondary consumer?
3
What is the trophic level of a tertiary consumer?
4
What is the trophic level of a quaternary consumer?
5
describe population
A group of organisms of 1 species, living in the same area at the same time
describe consumers
An organism that gets its energy by feeding on other organisms
describe trophic level
The position of an organism in a food chain and food web
describe decomposers
Organisms that break down organic substances outside their bodies, releasing nutrients from them that other organisms can use / an organism that gets its energy from dead or waste organic material
describe Herbivore
an animal that gets its energy by eating plants
describe carnivore
An animal that gets its energy by eating other animals
describe community
all of the populations of all the different species in an ecosystem
describe habitat
the place where an organism lives
describe producers
An organism that makes its own organic nutrients, generally using energy from sunlight, through photosynthesis
How does energy from grass reach the eagle? (Food chain: grass –> grasshoppers –> frog –> eagle)
the grass makes energy from photosynthesis, then the grasshopper eats the grass, gaining energy, the frog eats the grasshopper, gaining energy, the eagle eats the frog, gaining energy that was originally from the grass.
describe quaternary consumers
feeds on tertiary consumers
describe secondary consumers
feeds on primary consumers
explain why hawks are secondary consumers and tertiary consumers
Because hawks eat primary consumers such as beetles which makes them a secondary consumer but also eats secondary consumers such as frogs which makes them a tertiary consumer
what are feeding levels?
trophic levels
If all mice died, how would it affect the food web?
number of acorns would increase because there are less organisms that eat it but the number of owls would decrease because they lost a source of food
describe predators
organisms that hunt, catch, and kill their prey for food
describe top predator
organism that on the top of the food chain/web (they are not eaten by any other organism)
what energy is given out from the sun?
light energy
as we go more up the food chain, the organisms tend to get ______ and the number of organisms _________
bigger and decreases
How is energy from the sun transferred?
by light
carbon dioxide and water react to produce what?
glucose
