Uploaded by Julia Weed

Review for the levels of organization / organ systems

Unit 2 – Organization of Living Things
Study Guide
1. List the 4 levels of organization in an organism’s body in order from smallest to biggest. Give
two examples of each level.
2. What makes some organisms more complex than others? (NOT just animals!)
3. Fill in the table below:
Type of
Symmetry in
Organization of
body parts
Example in
Simple or complex?
4. Identify the symmetry in the animals below:
5. Fill in the table below:
Organ system
Purpose(job) for
Organs/Tissues involved
& what they do
Circulatory System
Vascular System
Reproductive System
Digestive System
6. What are 2 differences and 2 similarities between the circulatory system in animals and the
vascular system in plants? (Refer to both the structure and job of each.)
7. Label the parts of the flower above: stigma, anther, stem, sepal, ovary, filament, petal, style
In reference to the flower, answer the following questions:
a. Which part of the flower is the male part?
b. Which part of the flower is the female part?
c. Where does the pollen start off?
d. Where should pollen land on the flower in order to fertilize it?
e. How does pollen get transferred – give two ways it is moved.
f. Where are the “eggs” (female cells) found in the flower?
g. What happens to the eggs after they are fertilized? (What do they turn into?)
h. What is the purpose of the big, bright petals that most flowers have?
Put these in order from step 1 – 5
Step ___
Step ___
Step ___
Step ___
Step ___
Seeds are
Seed is formed
(& petals fall off)
Flower blooms
Pistil is pollinated
Anther releases