OPENING ACTIVITY
Complete your crossword puzzle using the following words.
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Abiotic
Biotic
Carnivore
Community
Consumer
Decomposers
Omnivor
Population
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Biosphere
Ecology
Ecosystem
Habitat
Herbivor
Niche
Prey
Symbiosis
• Parasite
• Producer
• Scavenger
Feeding Relationships
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There are 3 main types of feeding
relationships
1. Producer - Consumer
2. Predator - Prey
3. Parasite - Host
EQ: Identify and describe the three main types of feeding relationships.
Producers
• Sunlight is the main energy source for life on
earth
• Also called autotrophs
• Use light or chemical
energy to make food
• Examples include:
1. Plants
2. Plant-like protists (algae)
3. Bacteria
EQ: Identify and describe the three main types of feeding relationships.
How Do Plants Make
Their Own Food?!
EQ: Identify and describe the three main types of feeding relationships.
Remember, bacteria also
make their own food….
EQ: Identify and describe the three main types of feeding relationships.
What do we call the processes by which plants
and bacteria make their own food?
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Photosynthesis— process in which plants use light
energy to convert carbon dioxide and water into
oxygen and carbohydrates
(Remember: 6CO2 + 6H2O
Light Energy
6O2 + C6H12O6)
• E. Chemosynthesis—performed by bacteria, use
chemical energy to produce carbohydrates
EQ: Identify and describe the three main types of feeding relationships.
Consumers
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Organisms that rely on other organisms
for their energy and food supply
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Also called heterotrophs
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With your table partner, come up with 5
different consumers.
EQ: Identify and describe the three main types of feeding relationships.
Herbivores—obtain energy by
eating only plants
Carnivores—eat only animals
EQ: Identify and describe the three main types of feeding relationships.
Omnivores—eat both plants and animals
Decomposers—breaks down dead organic matter
EQ: Identify and describe the three main types of feeding relationships.
With your table partner….
Identify and write:
• 3 herbivores
• 2 carnivores
• 1 omnivores
• 1 decomposers
EQ: Identify and describe the three main types of feeding relationships.
Answer the following questions
on your paper. Please write the
question and the answer!
1. Producers are organisms that
a. Rely on other organisms for their energy and food
supply
b. Consume plant and animal remains and other dead
matter
c. Use energy they take in from the environment to
make food
d. Obtain energy by eating only plants
2. Which of the following organisms
is a decomposer?
Wolf
Bacteria
Bird
Tree branch
3. Which of the following describes
how ALL consumers get their energy?
a. Directly from the sun
b. From eating other consumers
c. From inorganic chemicals like hydrogen
sulfide
d. From eating organisms that were living
or were once living
For the following questions, you
need to either write the question or
answer in a complete sentence!
4. What is chemosynthesis?
5. Classify each of the following as a
herbivore, carnivore, omnivore, or
decomposer.
1. Earthworm
2. Bear
3. Cow
4. Snail
5. Owl
6. Human
6. People who explore caves where
there is running water but no
sunlight often find the caves
populated with unique types of
fishes and insects. What hypothesis
can you make to explain the
ultimate source of energy for these
organisms?
SWITCH PAPERS!!!!
1. Producers are organisms that use
energy they take in from the
environment to make food.
•If the answer is correct, place a check mark next to the question.
•If the answer is incorrect, write in the correct answer.
•If the answer is correct but they forgot to write the question or answer, place a BIG
circle around the entire question and answer.
2. Which of the following organisms
is a decomposer?
Bacteria
•If the answer is correct, place a check mark next to the question.
•If the answer is incorrect, write in the correct answer.
•If the answer is correct but they forgot to write the question or answer, place a BIG
circle around the entire question and answer.
3. All consumers get their energy
from eating organisms that are
living or were once living.
•If the answer is correct, place a check mark next to the question.
•If the answer is incorrect, write in the correct answer.
•If the answer is correct but they forgot to write the question or answer, place a BIG
circle around the entire question and answer.
4. What is chemosynthesis?
Chemosynthesis is a process in which chemical
energy is used to produce carbohydrates.
•If the answer is correct, place a check mark next to the question.
•If the answer is incorrect, write in the correct answer.
•If the answer is correct but they forgot to write the question or answer, place a BIG
circle around the entire question and answer.
5. Classify each of the following.
1. Earthworm = decomposer
2. Bear = omnivore
3. Cow = herbivore
4. Snail = decomposer
5. Owl = carnivore
6. Human = omnivore
•If the answer is correct, place a check mark next to the question.
•If the answer is incorrect, write in the correct answer.
•If the answer is correct but they forgot to write the question or answer, place a BIG
circle around the entire question and answer.
6. One possible hypothesis is that organic
matter may enter the caves from outside
via water or animals that come in from
outside. There may also be chemosynthetic
bacteria in the cave.
•If the answer is correct, place a check mark next to the question.
•If the answer is incorrect, write in the correct answer.
•If the answer is correct but they forgot to write the question or answer, place a BIG
circle around the entire question and answer.