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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 obtain water for growth.
C
They release stored energy.
D
They obtain minerals for growth.
2) Plants produce carbohydrates during what cellular process?
A
photosynthesis
B
respiration
C
glycolysis
D
replication
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
Budding increases genetic diversity among hydra.
B
Budding takes more time than sexual reproduction.
C
Hydra can reproduce through meiosis.
D
Hydra can reproduce without the need for a mate.
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
snake
B
mice
C
eagle
D
grass
6) Some scientists believe that life on Earth began about 3.5 billion years ago. What do they base this belief on?
A
the fossil record
B
the distance from the sun to Earth
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 evolve into a new organism.
B
They decrease and become extinct.
C
They go into hibernation.
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
liquid
B
gas
C
solution
D
solid
9) What does the term...dissociate...mean?
A
the splitting of molecules into ions in solution
B
the splitting of atoms into protons, neutrons, and electrons
C
the change from a liquid into a gas
D
the loss of electrons by an atom
10) What is one benefit of using chemical pesticides on food plants?
A
Insects cannot eat or lay eggs on the crops.
B
The food that is produced lasts longer without spoiling.
C
The crops absorb more nutrients.
D
The soil around the crops becomes richer.
*select an answer for all questions
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