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Science Benchmark Review Part 3 (Jones)
Test Description: Review of Discovery Ed Science Benchmark
Instructions: Answer all questions to get your test result.
1) What is the function of plant leaves?
A
They trap light energy for use during photosynthesis.
B
They release stored energy.
C
They obtain minerals for growth.
D
They obtain water for growth.
2) Plants produce carbohydrates during what cellular process?
A
replication
B
photosynthesis
C
respiration
D
glycolysis
3) The hydra is an animal that lives in freshwater streams and ponds. It reproduces by producing eggs and also by budding, a form of asexual reproduction. What advantage does budding give hydra?
A
Hydra can reproduce without the need for a mate.
B
Budding increases genetic diversity among hydra.
C
Hydra can reproduce through meiosis.
D
Budding takes more time than sexual reproduction.
4) What are the traits called that organisms use to survive?
A
evolutionary characteristics
B
homologous structures
C
ancient structures
D
adaptations
5) Of the 4 organisms listed, which supports the other organisms by making food from the nonliving components of the ecosystem?
A
grass
B
mice
C
snake
D
eagle
6) Some scientists believe that life on Earth began about 3.5 billion years ago. What do they base this belief on?
A
the distance from the sun to Earth
B
the fossil record
C
the time it takes to orbit Earth
D
the thickness of the mantle
7) When a species of organisms cannot adapt or change to meet its needs in a changing environment, what happens to this species?
A
They go into hibernation.
B
They evolve into a new organism.
C
They decrease and become extinct.
D
They increase in number.
8) At room temperature, oxygen is a gas and hydrogen is a gas. When they combine at room temperature, they form a ___.
A
solid
B
liquid
C
solution
D
gas
9) What does the term...dissociate...mean?
A
the loss of electrons by an atom
B
the splitting of molecules into ions in solution
C
the change from a liquid into a gas
D
the splitting of atoms into protons, neutrons, and electrons
10) What is one benefit of using chemical pesticides on food plants?
A
The food that is produced lasts longer without spoiling.
B
The crops absorb more nutrients.
C
The soil around the crops becomes richer.
D
Insects cannot eat or lay eggs on the crops.
*select an answer for all questions
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