WorksheetsNYS 8th Grade Science Review
Total questions: 15
Worksheet time: 30mins
Water and carbon dioxide are waste products released as a direct result of
asexual reproduction
mechanical digestion
natural selection
cellular respiration
The primary function of a plant's roots is to
absorb water
perform photosynthesis
produce seeds
exchange gases
Genes are a part of a
cell wall
chromosome
hormone
vitamin
Compared to the amount of genetic information contained in a normal human body cell, the amount contained in a normal human sperm cell is
the same
twice as much
one-half as much
one-fourth as much
Which type of information is organized by this chart?
energy flow in an ecosystem
population growth for pea plants
the number of chromosomes in an organism
the passing of a trait from one generation to another
A change in an animal’s DNA, leading to a variation in a species, is called
a mutation
an infection
selective breeding
sexual reproduction
Which set of terms describes natural fertilization and development in humans before birth?
external fertilization, external development
external fertilization, internal development
internal fertilization, external development
internal fertilization, internal development
A plant growing toward a light source is an example of an organism
attracting a mate
destroying infectious germs
responding to external stimuli
obtaining moisture from the air
A cactus plant, a snake, and a hawk can be members of the same
community
kingdom
population
species
Which substance in green plants needs to absorb sunlight during photosynthesis?
chlorophyll
cytoplasm
oxygen
water
In 1865, a pond was surrounded by open fi elds. Today, the same area is swampy and surrounded by a forest. Which process is responsible for this change?
metamorphosis
conservation
ecological succession
crustal plate movement
The fur on an arctic polar bear appears white all year. The color of the fur is an example of
an adaptation helping an organism to survive
an organism exchanging materials with its environment
an organism responding to internal stimuli
metabolism regulating an organism’s activities
Urban growth and uncontrolled waste disposal by humans most likely results in
conservation of fossil fuels
environmental degradation
improved soil compaction
a balanced ecosystem
Cell division occurs as part of which process?
Energy in food is released
A cut on a person's finger heals
A disinfectant destroys microbes
The body eliminates wastes
Which human activity would help reduce the amount of carbon dioxide in the atmosphere?
decrease the burning of fossil fuels
decrease the number of recycling program
increase the human population
increase the number of cars being driven
