Ecosystems

Ecosystems

Grouping

• Individual (one)

• Population (a group of the same organisms)

• Community (many populations living together)

• Ecosystem (biotic and abiotic working together)

• Biosphere (all the world's ecosystems)

Biotic vs. Abiotic

• Biotic- Bio(living) living things (plants/animals)

• Abiotic- A(no/not) Bio(living) NONLiving (soil, rocks, water)

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Multiple Choice

A deer dies in the wild is is considered biotic or abiotic?

• biotic

• abiotic

Multiple Choice

A plants leaves die and fall to the ground each winter, are the leaves biotic or abiotic?

• biotic

• abiotic

Multiple Choice

Is the Sun biotic or abiotic

• biotic

• abiotic

All living things depend on sunlight to survive.

• Plants need energy to make their food (photosynthesis)

• Animals need the sun to make the food they eat grow so they will have food to eat (Cellular Respiration)

Producers (Make their own food/plants) are at the bottom of the food chain

• CONSUMERS (have to eat their food) depend on PRODUCERS (plants) for energy

• Heterotroph (eat different things)

PRIMARY CONSUMERS (HERBIVORES/ eat plants) (rabbit, giraffe, cow, cricket)

• SECONDARY CONSUMERS (Eat Primary consumers). (birds, hyena, snake)

• TERTIARY CONSUMERS (eat secondary consumers). (lions, Cheetahs, owls)

OMNIVORES- eat plants and animals

• CARNIVORES- Eat only meat

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Multiple Choice

If mice eat plants and insects what would they be considered?

• ominvore

• carnivore

• herbivore

Multiple Choice

If a Hawk eats a mouse, that eats the cricket, who feeds on the grass, what would the owl be considered?

• omnivore

• carnivore

• herbivore

In food chain the energy flow is the way in which the arrow points. An organism has to EAT food in order to get energy

• 10% of the energy is transferred from one level to the next.

• The organisms at the TOP of the food chain receive the LEAST amount of energy

• Ex. Lions sleep most of the day

the grasshopper has to eat the grass to get energy so the arrow is points to where the energy is going

If one portion of the food chain is disrupted the whole food chain suffers.

• ex. If a wildfire destroys all the grass on the prairies in Africa the Lions will be affected as well as all organisms in that food chain.

• No grass, no food for gazelle , no food for lions

Multiple Choice

Which organism is considered a secondary consumer?

• snake

• frog

• cricket

• grass

Multiple Choice

an organism that performs photosynthesis is called a

• consumer

• producer

• decomposer

• heterotroph

Multiple Choice

How much energy is transferred from one level on the food chain to the next?

• none of it

• all of it

• about 1%

• about 10%