CHAPTER
NEW CHAPTER
Systems in Organisms
the BIG idea
Organisms are made of different parts that work together to
perform life functions.
8.1 Systems help organisms meet their needs.
8.2 Plants have several levels of organization.
8.3 Animals have several levels of organization.
8.4 Human health depends on a balance among systems.
CHAPTER OUTLINE
CHAPTER RESOURCES
8.1
KEY CONCEPT
CHAPTER HOME
Systems help organisms meet their
needs.
CALIFORNIA
Content Standards
VOCABULARY
tissue
organ
7.1.f Students know that as multicellular organisms
develop, their cells differentiate.
7.5.a Students know plants and animals have levels of
organization for structure and function, including cells,
tissues, organs, organ systems, and the whole
organism.
7.5.b Students know organ systems function because
of the contributions of individual organs, tissues, and
cells. The failure of any part can affect the entire
system.
organ system
hibernation
CHAPTER
RESOURCES
SECTION
OUTLINE
8.1
KEY CONCEPT
CHAPTER HOME
Systems help organisms meet their
needs.
•Multicellular organisms have cells, tissues, organs,
and organ systems.
•Organ and systems respond to changing conditions.
VOCABULARY
tissue
organ
organ system
hibernation
CHAPTER
RESOURCES
SECTION
OUTLINE
8.2
CHAPTER HOME
KEY CONCEPT
Plants have several levels of organization.
CALIFORNIA
Content Standards
VOCABULARY
stomata
vascular system
7.5.a Students know plants and animals have levels of
organization for structure and function, including cells,
tissues, organs, organ systems, and the whole
organism.
root system
shoot system
7.5.b Students know organ systems function because
of the contributions of individual organs, tissues, and
cells. The failure of any part can affect the entire
system.
CHAPTER
RESOURCES
SECTION
OUTLINE
8.2
CHAPTER HOME
KEY CONCEPT
Plants have several levels of organization.
• Vascular plants have dermal, vascular, and ground
tissues.
VOCABULARY
stomata
• Plants have root systems and shoot systems.
vascular system
• Plants have adapted to many varied environments.
root system
shoot system
CHAPTER
RESOURCES
SECTION
OUTLINE
8.3
KEY CONCEPT
CHAPTER HOME
Animals have several levels of
organization.
CALIFORNIA
Content Standards
VOCABULARY
exoskeleton
endoskeleton
7.5.a Students know plants and animals have levels of
organization for structure and function, including cells,
tissues, organs, organ systems, and the whole
organism.
7.5.b Students know organ systems function because
of the contributions of individual organs, tissues, and
cells. The failure of any part can affect the entire
system.
7.5.c Students know how bones and muscles work
together to provide a structural framework for
movement.
CHAPTER
RESOURCES
SECTION
OUTLINE
8.3
KEY CONCEPT
CHAPTER HOME
Animals have several levels of
organization.
• Animals have epithelial, nerve, muscle, and connective
tissues.
VOCABULARY
• Tissues work together in organs, and organs work
together in systems.
endoskeleton
exoskeleton
• Systems have adapted in different ways in different
animals.
VISUALIZATION
Explore the different
systems in the human body.
CHAPTER
RESOURCES
SECTION
OUTLINE
8.4
KEY CONCEPT
CHAPTER HOME
Human health depends on a balance
among systems.
CALIFORNIA
Content Standards
7.5.b Students know organ systems function because
of the contributions of individual organs, tissues, and
cells. The failure of any part can affect the entire
system.
VOCABULARY
homeostasis
hormone
gland
CHAPTER
RESOURCES
SECTION
OUTLINE
8.4
KEY CONCEPT
CHAPTER HOME
Human health depends on a balance
among systems.
• Body systems maintain homeostasis.
VOCABULARY
• Body temperature, ion concentrations, oxygen and
carbon dioxide concentrations, and concentrations of
other nutrients are kept at certain levels
homeostasis
• The endocrine system
helps regulate body
conditions.
hormone
gland
CHAPTER
RESOURCES
SECTION
OUTLINE
8.1
KEY CONCEPT
CHAPTER HOME
Systems help organisms meet their
needs.
I. Systems help organisms meet their needs.
VOCABULARY
tissue
A. Living things have common needs.
B. Multicellular organisms have organ systems.
1. Levels of Organization
2. How an Organ System Works
organ
organ system
hibernation
C. Organs and systems respond to changes in
conditions.
1. Plant Responses to Stimuli
2. Animal Responses to Stimuli
CHAPTER
RESOURCES
KEY CONCEPT
SUMMARY
8.2
CHAPTER HOME
KEY CONCEPT
Plants have several levels of organization.
II. Plants have several levels of organization.
A. Plants are a diverse group of organisms.
B. Plants have three main types of tissue.
1. Dermal Tissue
2. Vascular Tissue
VOCABULARY
stomata
vascular system
root system
shoot system
3. Ground Tissue
C. Plant tissues work together in systems.
1. The Root System
2. The Shoot System
3. System Failure
CHAPTER
RESOURCES
KEY CONCEPT
SUMMARY
8.2
CHAPTER HOME
KEY CONCEPT
Plants have several levels of organization.
II. Plants have several levels of organization.
D. Plants have adapted to their environments.
1. Modified Stems
2. Modified Leaves
3. Modified Roots
VOCABULARY
stomata
vascular system
root system
shoot system
CHAPTER
RESOURCES
KEY CONCEPT
SUMMARY
8.3
KEY CONCEPT
CHAPTER HOME
Animals have several levels of
organization.
III. Animals have several levels of organization.
VOCABULARY
exoskeleton
A. Animalia is a diverse kingdom.
B. Most Animals have four types of tissue.
1. Epithelial Tissue
endoskeleton
2. Nerve Tissue
3. Muscle Tissue
4. Connective Tissue
C. Animals are adapted to many environments.
1. Eyes
2. Skin
3. Skeletal Systems
D. Organ systems work together.
CHAPTER
RESOURCES
KEY CONCEPT
SUMMARY
8.4
KEY CONCEPT
CHAPTER HOME
Human health depends on a balance
among systems.
IV. Human health depends on a balance among
systems.
A. The body’s systems work all the time.
B. Body systems maintain homeostasis.
VOCABULARY
homeostasis
hormone
gland
1. Body Temperature
2. Ion Concentrations
3. Oxygen and Carbon Dioxide Concentrations
4. Other Nutrients
C. The endocrine system helps regulate body
conditions.
1. Hormones and Glands
2. Negative Feedback
D. Homeostasis may be disrupted.
CHAPTER
RESOURCES
KEY CONCEPT
SUMMARY
CHAPTER HOME
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