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NAME_________________________________________Date__________________
HOMEROOM_____________________
SCIENCE practice quiz week of March 17th
Relax! Take a deep breath! Count backwards from 10! Now
take your quiz!
1. What are the smallest living parts of plants and animals?
a) cells
b) matter
c) molecules
d) oxygen
2. Which of the following describes what happens during a chemical reaction
between two compounds?
e) Some atoms are lost during the reaction
f) Atoms in the reactants rearrange to form particles with different properties.
g) A solid dissolves in a liquid
h) New atoms form during the reaction.
3. What type of cloud can extend from low to high in the atmosphere?
a) cirrus
b) stratus
c) fog
d) thunderhead
4. How many different elements are there?
i) More than 100
j) More than 200
k) More than 300
l) More than 400
5. Which job do the roots of a plant do?
e) Roots carry material to the leaves
f) Roots take in water from the soil
g) Roots carry out photosynthesis
h) Roots make shade for the lower leaves
6. Which structure is present only in plant cells?
m) A nucleus
n) A cell wall
o) A mitochondrion
p) A cell membrane
7. ___________________ carries water and minerals throughout a plant. (xylem,
phloem)
8. A________________ in an animal is surrounded by a membrane and contains
fluid. It stores water and nutrients.(ribosome, vacuole)
9. Explain the role of phloem in plants and how phloem forms bark on a tree. (2
points)
Phloem is a plant tissue that transports sugar from the leaves of a plant to the roots.
Phloem is made just below the bark. As new phloem cells form and grow, they push
old dead phloem cells outward. These cells form the bark of a tree.