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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
selective breeding
C
natural selection
D
decomposition
2) Change in populations (such as galapagos island tortoises) over many generations is a result of
A
overproduction
B
migration
C
asexual reproduction
D
natural selection
3) At each stage of ecological succession, modifications make it suitable for the next stage as
A
biodiversity and stability decrease
B
less and less food is available
C
biodiversity and stability increase
D
climates become warmer
4) When rabbits mate, sperm fertilizes an egg and
A
genetic material is passed from generation to generation
B
all offspring are identical clones of one parent
C
asexual reproduction occurs
D
the species becomes extinct
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
meat eater, thing that east plants, sun, plants
B
thing that eats plants, sun, meat eater, sun
C
sun, plants, thing that eats plants, meat eater
D
sun, plants, meat eater, thing that eats plants
6) Making plant food from sunlight is
A
the function of a chloroplasts
B
a watershed
C
the structure of chlorophyll
D
the response of the nervous system
7) Camouflaged fur is an example of
A
selective breeding
B
radiant energy transforming into chemical energy
C
maintaining homeostasis
D
an adaptation that aids survival
8) Your respiratory system (lungs) exchange oxygen and carbon dioxide. But the system that transports nutrients and wastes is
A
circulatory system
B
nervous system
C
endocrine system
D
reproductive system
9) The function of a cell's vacuole is
A
storage
B
sexual reproduction
C
respiration
D
gas exchange
10) The mitochondria of a cell
A
lives forever
B
photosynthesizes
C
produces energy from food
D
mutate suntil superpowers are achieved
11) Genes are found on chromosomes in the nucleus of cells. Genes determine
A
all of these answers are correct
B
traits
C
skills
D
intelligence
12) An automatic response to stimuli (dropping a hot potato) is a result of the
A
nervous system
B
circulatory system
C
integumentary system
D
muscular system
13) Breathing (using oxygen to burn calories from food, resulting in carbon dioxide) and photosynthesis are
A
chemical changes
B
response to external stimuli
C
physical changes
D
dominant traits
14) Photosynthesis turns
A
chemical energy into electrical energy
B
kinetic energy into potential energy
C
solar energy into thermal energy
D
radiant energy into chemical energy
15) Which would an ecosystem rely on the most?
A
hawks and turtles
B
butterflies and grasshoppers
C
panda bears and mice
D
trees and grass
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
determine traits
D
turn radiant energy into chemical energy
*select an answer for all questions
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