Levels of Organization
Science Fair Checkpoint later this
week!
Create a Venn diagram
Plants
2
Animals
2
2
Helping Questions:
What are they made up of? How do they get food? How do
they reproduce? How do they get rid of wastes? How do they
respond and change?
Matching
• What are the differences between animals
and plants throughout the levels?
• What are the similarities between animals and
plants throughout the levels?
Cells
• Definition – The basis unit of life
composed of mainly water, but also
contain other substances that are
essential for life
• Examples: Red blood cell, nerve cell
• Organelles: Mitochondrion, Nucleus,
Chloroplast, Cytoplasm, Vacuole,
Cell Wall, Cell Membrane
• Prokaryotes – genetic material is NOT
surrounded by a membrane, most are
unicellular
• Eukaryotes – genetic material IS
surrounded by a membrane, contain
organelles. Eukaryotic cells are larger than
prokaryotic cells
Tissue
• Definition – groups of similar types of cells that
work together to carry out specific tasks
• Main types in animals:
1.
2.
3.
4.
Muscle
Connective
Nervous
Epithelial (skin)
• Main types in plants:
1. Dermal (prevents water loss)
2. Vascular (transports water)
3. Ground (provides storage &
support, site of photosynthesis)
Organs
• Definition – groups of different tissues
working together to perform a particular
job.
• Examples– esophagus, stomach, large
intestine, small intestine, rectum, tongue,
liver, gallbladder, pancreas, lungs, nose,
mouth, bronchi, diaphragm, pharynx,
trachea, heart, arteries, veins, skin, brain,
spinal cord, peripheral nerves
Organ System
• Definition – groups of
different organs that work
together to complete a
series of tasks
• Examples:
o Respiratory
o Skeletal
o Circulatory
o Muscular
o Digestive
o Nervous
Organism
• Definition – an individual form of life that is
capable of growing, taking in nutrients, and
usually reproducing (organ systems working
together)
• Unicellular Eukaryotes:
o Amoeba
o Algae
o Athlete’s foot
• Multicellular Eukaryotes:
o Humans
o Animals
1. Why do organisms require different levels of
cellular organization?
2. What are the 5 levels of organization?
3. Do unicellular organisms have levels of
organization? Explain your answer.
Complete the worksheet
• Cells R Us