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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
decomposition
B
a behavioral modification
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
natural selection
C
overproduction
D
migration
3) At each stage of ecological succession, modifications make it suitable for the next stage as
A
less and less food is available
B
biodiversity and stability decrease
C
climates become warmer
D
biodiversity and stability increase
4) When rabbits mate, sperm fertilizes an egg and
A
the species becomes extinct
B
asexual reproduction occurs
C
all offspring are identical clones of one parent
D
genetic material is passed from generation to generation
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
thing that eats plants, sun, meat eater, sun
B
sun, plants, thing that eats plants, meat eater
C
meat eater, thing that east plants, sun, plants
D
sun, plants, meat eater, thing that eats plants
6) Making plant food from sunlight is
A
the response of the nervous system
B
the structure of chlorophyll
C
a watershed
D
the function of a chloroplasts
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
nervous system
B
circulatory system
C
endocrine system
D
reproductive system
9) The function of a cell's vacuole is
A
gas exchange
B
sexual reproduction
C
respiration
D
storage
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
intelligence
B
skills
C
traits
D
all of these answers are correct
12) An automatic response to stimuli (dropping a hot potato) is a result of the
A
nervous system
B
muscular system
C
circulatory system
D
integumentary system
13) Breathing (using oxygen to burn calories from food, resulting in carbon dioxide) and photosynthesis are
A
chemical changes
B
physical changes
C
response to external stimuli
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
butterflies and grasshoppers
B
trees and grass
C
hawks and turtles
D
panda bears and mice
16) Organs of the excretory system such as the kidneys, liver, lungs and large intestine
A
produce caron dioxide
B
determine traits
C
remove toxins from the body
D
turn radiant energy into chemical energy
*select an answer for all questions
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