1. Section 13-3 & 13-4 “Energy & Food Chains ”

2. Fill in the top part first.
Producers
Photosynthesis:
Chemosynthesis:
Consumers

3. Producers provide energy for other organisms in an ecosystem.
Producers get their energy from non-living resources (like the sun).
Producers are also called autotrophs because they make their own food (“auto” means “self”).

4. Section 13.3 KEY CONCEPT: Life in an ecosystem requires a source of energy.
Producers provide energy for other organisms in an ecosystem
get their energy from non-living resources (like the sun).
autotrophs
make their own food

5. Almost all producers obtain energy from sunlight.
Photosynthesis in most producers uses sunlight as an energy source. (plants do this)
Chemosynthesis in prokaryote producers uses chemicals as an energy source.
carbon dioxide + water +
hydrogen sulfide + oxygen
sugar + sulfuric acid

6. in which carbohydrates are formed, energy is obtained from chemicals
process in which carbohydrates are formed, energy
is obtained from sunlight
in which carbohydrates are formed, energy is obtained from chemicals
Process in which carbohydrates are formed
PRODUCERS
Begin food chain

7. Consumers are organisms that get their energy by eating other living things (or dead things that used to be alive)
Consumers are also called heterotrophs because they feed off of different things. (“hetero” means “different)

8. are organisms that get their energy by eating other living things
heterotrophs
Consumers
they feed off of different things

9. Section 13.4 KEY CONCEPT: Food chains and food webs model the flow of energy in an ecosystem.

10. A food chain is a model that shows a sequence of feeding relationships.
A food chain follows the connection between one producer and a single chain of consumers within an ecosystem.
DESERT COTTONTAIL
GRAMA GRASS
HARRIS’S HAWK

11. Fill in from next slide set

12. Consumers are not all alike.
Herbivores eat only plants.
2. Carnivores eat only animals.
3. Omnivores eat both plants and animals.
4. Detritivores eat dead organic matter.
5. Decomposers are detritivores that break down organic matter into simpler compounds.

13. Scorpion Fern mushrooms Pill bugs (isopods)
From the pictures below on your power notes write the name of the organism and then decide which of the 5 types of consumer it could be.
Scorpion
Fern
mushrooms
Pill bugs (isopods)
Raccoon
Cow

14. Detritivores Not a consumer! Plants are producers. Carnivore Scorpion
Check your answers: From the pictures below on the back of your power notes write the name of the organism and then decide which of the 5 types of consumer it could be.
Not a consumer!
Plants are producers.
Carnivore
Scorpion
Fern
mushrooms
mushrooms
Decomposer
Pill bugs (isopods)
Detritivores
Omnivore
Raccoon
Herbivore
Cow

15. Specialists are consumers that primarily eat one specific organism or a very small number of organisms.
Generalists are consumers that have a varying diet.

16. Primary consumers are herbivores that eat producers.
Trophic levels are the nourishment levels in a food chain.
Primary consumers are herbivores that eat producers.
Secondary consumers are carnivores that eat herbivores.
Tertiary consumers are carnivores that eat secondary consumers.
Omnivores, such as humans that eat both plants and animals, may be listed at different trophic levels in different food chains.

17. The mouse is going into the snakes mouth
Food Chains: Notice the arrow points toward the animal that is doing the eating (the eater)
The mouse is going into the snakes mouth
The snake is going into the fox’s mouth

18. Now Draw your Own Food Chain on the power notes
The organisms you will use are:
grass, grasshopper, bird, hawk
Label the organism type (primary consumer, etc.)

19. How many trophic levels?
Food Chain
Primary Consumer
Secondary Consumer
Tertiary Consumer
Producer
How many trophic levels? 4

20. A food web shows a complex network of feeding relationships.
An organism may have multiple feeding relationships in an ecosystem.
A food web emphasizes complicated feeding relationships and energy flow in an ecosystem.

21. Food WEB – notice all the different arrows

22. A food web shows a complex network of feeding relationships

23. Fill in power notes from drawing which would be found on page 410
Producers – creates own food
Primary consumers are herbivores that eat producers.
Secondary consumers are carnivores that eat herbivores.
Tertiary consumers are carnivores that eat secondary consumers.
Phytoplankton
Algae
Zooplankton
Sea turtle
Shrimp
Parrot fish
Jellyfish
Trigger fish
Sea sponge
Reef Shark

24. a complex network of feeding relationships
Add arrows
Phytoplankton Algae
Zooplankton
Sea turtle
Shrimp
Parrot fish
Jellyfish
Trigger fish
Sea sponge
Reef Shark

25. Phytoplankton algae Reef Shark Zooplankton Sea turtle shrimp
Parrot fish
Jellyfish
Trigger fish
Sea sponge
Reef Shark