Name Lovelee McElrath Class Biology 1st Block
Date February 1, 2021
3.2 Energy, Producers, and Consumers
Lesson Objective
Define primary producers.
Describe how consumers obtain energy and nutrients.
BUILD vocabulary
A. The chart below shows key terms from the lesson with their definitions. Complete the chart by
writing a strategy to help you remember the meaning of each term. One has been done for you.
Definition
How I’m Going to Remember
the Meaning
Autotroph
An organism that uses energy from
the sun or chemicals and converts it
into forms that living cells can use;
also known as an organism that
produces its own food
A type of consumer that kills and eats
other animals
Uses energy from the sun or chemicals
and they produce their own food.
Chemosynthesi
s
Process by which chemical energy is
used to produce carbohydrates
Chemical energy is used to produce
carbohydrates.
Consumer
An organism that relies on other
organisms for energy
Organisms that rely on other organisms
for energy.
Decomposer
An organism that feeds by chemically
breaking down other organisms
Breaking down other organisms.
Detritivore
An organism that feeds on detritus, or
small pieces of dead and decaying
plants and animals
Dead and decaying plants and
animals.
Herbivore
An organism that obtains energy by
feeding on plant parts
Feeds on plant parts.
A consumer that ingests other
organisms for energy
Ingests other organisms for energy.
Th
Carnivore
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Term
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Heterotroph
A cat is a carnivore because it
eats meat.
Continued on next page
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Name
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Class
Date
Term
Definition
Omnivore
An animal that eats both plants and
animals
Photosynthesis
Process that uses light energy to
power chemical reactions that
convert carbon dioxide and water
into oxygen and carbohydrates
Autotrophs or the first producers of
energy-rich compounds that are
later used by other organisms
Uses light energy.
Animals that consume the
carcasses of other animals that
have been killed by predators or
died of natural causes
Consumes the carcasses of other animals.
Primary
producer
Scavenger
How I’m Going to Remember the
Meaning
Omnivore sounds like “yumsome-more”: I’ll eat anything.
First producers of energy-rich compounds.
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B. As you work through this lesson, you may find these terms in the activities. When you need to
write a key term or a definition, highlight the term or the definition.
Primary Producers
Autotrophs are also called primary producers. Two processes used to make food are
photosynthesis and chemosynthesis.
Complete the Venn diagram below to compare and contrast photosynthesis with
chemosynthesis. Place each word from the box below in the correct location.
produces
oxygen
produces
carbohydrates
sulfur bacteria
uses hydrogen
sulfide
sh
Th
requires light
algae primary
producers
cyanobacteria
green plants
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Name
Class
BUILD Understanding
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Date
Concept Map A concept map can help you organize information and show how ideas are
connected. The concept map below shows the relationships between different types of organisms
in this lesson.
As you read the lesson, place the terms from the box in the correct location in the concept
map.
also
called
autotroph
primary producers
uses chemical
energy for the
process of
is
ar stu
ed d
vi y re
aC s
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uses solar
energy for
the process of
is ingested
by a
photosynthesis
chemosynthesis
also called a
consumer
heterotroph
metal-eating
plant-eating
plant and metal-eating
omnivore
decomposer
detritus
producing
detritus-
detritivorefeeding
herbivore
carnivore
scavenger
Th
Follow the directions.
1. List each of the terms in the concept map that is a type of consumer. Carnivore, Omnivore, and
Herbivore.
sh
2. Name the two processes that autotrophs use to make carbohydrates. Chemosynthesis and
Photosynthesis.
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