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May 2021
Test Description: Science topics from the 1st and 2nd semester
Instructions: Answer all questions to get your test result.
1) When farmers grow crops, they breed the best fruit or vegetable plants together. This is called
A
a behavioral modification
B
decomposition
C
natural selection
D
selective breeding
2) Change in populations (such as galapagos island tortoises) over many generations is a result of
A
asexual reproduction
B
overproduction
C
migration
D
natural selection
3) At each stage of ecological succession, modifications make it suitable for the next stage as
A
less and less food is available
B
climates become warmer
C
biodiversity and stability increase
D
biodiversity and stability decrease
4) When rabbits mate, sperm fertilizes an egg and
A
all offspring are identical clones of one parent
B
genetic material is passed from generation to generation
C
the species becomes extinct
D
asexual reproduction occurs
5) All ecosystems must have plants. Plants change light energy to chemical energy while making plant food. Energy flows through an ecosystem in this order:
A
sun, plants, thing that eats plants, meat eater
B
meat eater, thing that east plants, sun, plants
C
sun, plants, meat eater, thing that eats plants
D
thing that eats plants, sun, meat eater, sun
6) Making plant food from sunlight is
A
the structure of chlorophyll
B
the function of a chloroplasts
C
the response of the nervous system
D
a watershed
7) Camouflaged fur is an example of
A
selective breeding
B
maintaining homeostasis
C
an adaptation that aids survival
D
radiant energy transforming into chemical energy
8) Your respiratory system (lungs) exchange oxygen and carbon dioxide. But the system that transports nutrients and wastes is
A
endocrine system
B
nervous system
C
circulatory system
D
reproductive system
9) The function of a cell's vacuole is
A
sexual reproduction
B
respiration
C
storage
D
gas exchange
10) The mitochondria of a cell
A
produces energy from food
B
mutate suntil superpowers are achieved
C
photosynthesizes
D
lives forever
11) Genes are found on chromosomes in the nucleus of cells. Genes determine
A
skills
B
intelligence
C
all of these answers are correct
D
traits
12) An automatic response to stimuli (dropping a hot potato) is a result of the
A
circulatory system
B
nervous system
C
integumentary system
D
muscular system
13) Breathing (using oxygen to burn calories from food, resulting in carbon dioxide) and photosynthesis are
A
response to external stimuli
B
physical changes
C
chemical changes
D
dominant traits
14) Photosynthesis turns
A
solar energy into thermal energy
B
radiant energy into chemical energy
C
chemical energy into electrical energy
D
kinetic energy into potential energy
15) Which would an ecosystem rely on the most?
A
trees and grass
B
panda bears and mice
C
hawks and turtles
D
butterflies and grasshoppers
16) Organs of the excretory system such as the kidneys, liver, lungs and large intestine
A
remove toxins from the body
B
produce caron dioxide
C
turn radiant energy into chemical energy
D
determine traits
*select an answer for all questions
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