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Life Science Review (8th grade test)
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Looking at the food web below, which animal is an omnivore?
 
bear
 
deer
 
fox
 
owl
Which of the following pond food chains is in the correct order?
 
Algae --> Insects --> Bluegill Fish
 
Grass--> Insects --> Algae
 
Algae--> Bluegill fish --> Insects
 
Bluegill fish --> Insects --> Frogs
Based on the food web, what role does the crab play?
 
consumer
 
producer
 
scavenger
 
decomposer
How are the digestive and circulatory systems alike?
 
Both absorb gases or nutrients into the body.
 
Both protect organs in the body.
 
Both control movement in the body.
 
Both provide structural support for the body.
In what way are the circulatory system & nervous system similar?
 
They are transport systems.
 
They both perform the same function.
 
They are both structural sytems.
 
They both involve the same organs.
Transporting gases and nutrients all over the body is the job of what system?
 
circulatory
 
respiratory
 
nervous
 
skeletal
Which human body systems are located throughout most of the body?
 
digestive and circulatory
 
digestive and respiratory
 
respiratory and circulatory
 
skeletal and respiratory
How does the muscular system depend on the nervous system?
 
The nervous system sends signals to the muscles.
 
The nervous system supplies food & oxygen to the muscles.
 
The nervous system provides support for the muscles.
 
The nervous system transports blood to the muscles.
What 2 body systems work closely together to distribute nutrients from food throughout the body?
 
digestive and circulatory
 
muscular and skeletal
 
circulatory and respiratory
 
cardiovascular and nervous
Which biome has the most variety of plants and animals?
 
rainforest
 
deciduous forest
 
tundra
 
grasslands
A group of ecosystems with similar organisms and climates.
 
biome
 
population
 
ecosystem
 
desert
Prairies and savannas are two examples of this land biome?
 
grasslands
 
biomes
 
tundra
 
taiga
Which biome do we live in?
 
deciduous forest
 
boreal forest
 
taiga
 
savanna
Which biome is sandy and/or rocky with very little rain?
 
desert
 
grassland
 
taiga
 
boreal forest
Which land biome is mainly covered with grass?
 
prairies
 
desert
 
taiga
 
tundra
Identify an a example of an abiotic factor?
 
sunlight
 
animals
 
plants
 
algae
Biotic factors of an ecosystem are:
 
living
 
nonliving
 
plants
 
rocks
Which biome is hot all year with wet and dry seasons?
 
desert
 
tundra
 
taiga
 
grasslands
Conner’s scar is a(n) ________________________________________ because it happened after his birth.
 
acquired
 
learned
 
instinct
 
behavior
A gene that does not show itself unless it is paired with a like gene. Ex: Red hair and blue eyes
 
recessive
 
dominant
 
alleles
 
chromosomes
An inherited behavior, one that is not learned but is done automatically. Ex: A spider spinning a web
 
instinct
 
learned
 
acquired
 
behaviors
A characteristic that is passed from parents to offspring such as hair color, eye color, freckles, dimples.
 
inherited
 
learned
 
acquired
 
behaviors
A gene that always overpowers a recessive gene. Ex: Brown Eyes
 
dominant
 
recessive
 
genetics
 
inherited
John's father is a chemist and his mother is a teacher. John wants to be a teacher when he grows up. Which best describes John's desire to be a teacher?
 
career choice is a learned characteristic that is influenced
 
career choice is a learned characteristic that is chosen by
 
career choice is an inherited characteristic from one's fath
 
career choice is an inherited characteristic from one's mot
Which trait does a dog inherit from its parents?
 
fur color and pattern
 
food brand preferences
 
obedience to commands
 
affection towards its owners
Which human trait is most likely inherited from a parent?
 
how tall you are
 
reading a book
 
holding a fork
 
drinking from a cup
From whom may an animal inherit characteristics?
 
its parents
 
other animals in the population
 
other animals in the ecosystem
 
its brothers and sisters
Kim has freckles. Which best explains why?
 
Kim's parents have freckles
 
Kim likes freckles
 
All babies have freckles
 
Kim's mother wants the baby to have freckles
If wolves prey on deer for food, what will most likely happen to the deer population if wolves are removed from an area where deer live?
 
the population of deer will increase.
 
The population of deer will remain the same.
 
The population of deer will decrease.
 
The population of deer will become extinct.
In a grassland ecosystem, if the population of eagles suddenly decreased, what will most likely be the effect on the rest of the ecosystem?
 
The ecosystem will become overpopulated with snakes
 
The nutrition of the soil in the ecosystem will decrease
 
There will be a decrease in the population of snakes
 
More types of plants will begin growing in the ecosystem
Eelgrass is a major source of food for birds and turtles in an estuary. What will most likely happen to the bird and turtle populations if people remove the eelgrass to build a bridge?
 
Both populations will decrease
 
bird population and the turtle population will increase
 
bird population will increase, but the turtles will decrease
 
turtle population will increase, but the birds will decrease
Tyler is classifying organisms according to their source of energy. Based on the food chain pictured, which organism would be considered a carnivore?
 
bird
 
ant
 
maple leaf
 
sun
Which best describes a producer?
 
a plant that makes its own food
 
an organism that gets its energy from animals
 
an organism that gets its energy from plants
 
the sun because it provides energy for plants
An ecosystem is a community of organisms interacting with their physical environment. Why are decomposers an important part of ecosystems?
 
They break down dead things & return nutrients to the soil
 
They play a role in preventing weathering and erosion
 
They produce their own food for survival.
 
They provide the energy to most of the consumers.
In a food chain, the sun provides energy for an apple tree to grow. A deer eats an apple from the tree. Which is a consumer?
 
deer
 
apple
 
tree
 
sun
Which can be concluded about the trees that grow in a temperate deciduous forest?
 
The trees have adapted to survive the change of seasons
 
The trees require constant direct sunlight to survive
 
The trees are unable to grow in climates that have constant
 
The trees grow only during the warm months of the year
How does the muscular system depend on the nervous system?
 
nervous system sends signals to the muscles
 
nervous system supplies food and oxygen to the muscles
 
The nervous system transports blood to the muscles
 
The nervous system provides support for the muscles
What three systems work together to move the body?
 
Skeletal, Muscular, Nervous
 
Skeletal, Respiratory, Digestive
 
Nervous, Circulatory, Skeletal
 
Circulatory, Respiratory, Digestive
Which of the following is NOT part of the Circulatory System?
 
brain
 
heart
 
arteries
 
lungs
Food is broken down into useful nutrients for your body in the ____________
 
digestive
 
excretory
 
nervous
 
muscular
An organism has several major body systems that work together to allow the organism to survive. Which best describes this organism?
 
It is multi-celled
 
It is single-celled
 
It is unicellular
 
It is a transport system
Which statement describes the cellular makeup of a deer?
 
Deer are made of many cells that carry out many processes
 
Deer are made of one cell that carries out one life process
 
Deer are made of one cell that carries out all processes
 
Deer are made of many cells that carry out no processes
Which characteristic best describes both amoebas and bacteria?
 
single-celled
 
abiotic
 
multi-celled
 
biotic
The smallest unit of a living thing that can carry out the basic processes of life.
 
cell
 
atom
 
chlorophyll
 
chloroplast
An organism only made out of one cell is called
Unicellular
The tool scientists use to see cells is called a _________.
microscope
Openings that let air and water move it and out of leaves are called? A. Stomach B. Phloem C. Stomata D. Las Bocas
C. Stomata
What is the name of the process in which plants make their own food called?
Photosynthesis
How many chambers does the human heart have?
4
What are the three main types of muscle in the human body?
Smooth, Cardiac, and Skeletal
Which body system brings oxygen into your body?
Respiratory
Where does digestion START?
In the mouth
This organelle contains DNA and controls cellular growth and reproduction
Nucleus
This is a picture of a(n)
Animal Cell
All of these statements are part of cell theory, EXCEPT 1. All living things are composed of cells 2. Cells are the basic unit of structure and function 3. New cells come from existing cells 4. Cells are really small
4. Cell are really small
This is an image of a(n)
Plant Cell
This organelle provides the energy for the cell
Mitochondria
What is the difference between a genotype and a phenotype?
Answer varies, teacher discretion.
If blonde hair is recessive, look at the table to determine the probability of blonde hair. What is it?
25% or 1/4
How many of the potential offspring would carry the dominant gene?
3
Which of the following is a Heterozygous alleles? BB, Bb, bb
Bb
Passing of traits from one generation to another is the definition of:
Heredity
What is qualitative data in an experiment?
something that can be observed by using senses
What is quantitative data in an experiment?
data usually in the form of numbers
What percent of genes come from the mother in human sexual reproduction?
50%
What part of a cell contains heredity information? Cell Membrane, Vacuole, Endoplasmic Reticulum, or Chromosomes
Chromosomes
Plants use water, carbon dioxide and sunlight during the process of photosynthesis and produce _____________ & __________________.
Oxygen & Glucose
Which is the primary consumer in this food chain?
Grasshopper
Is this a food chain or food web?
Food Chain
Name three different body systems and give an example of a major organ of each one.
Answer varies. Up to teacher discretion.
What is the function of the circulatory system?
The circulatory system delivers oxygen and nutrients to cells and takes away wastes. The heart pumps oxygenated and deoxygenated blood on different sides.
What is a carnivore?
An animal whose food and energy requirements derive solely from animal tissue or meat
What is the control center of the cell?
Nucleus
What is responsible for getting rid of dead organisms in the food chain?
decomposers or scavengers
What does the arrow represent in a food web?
The arrow points towards the animal eating it (The flow of energy)
What rigid structure is only found in plant cells?
Cell Wall
Define an abiotic factor.
Non-living things within an ecosystem
Give an example of a producer (from our ecology unit).
Any plant
Put the following in the correct order: tissue, organ system, cell, organ
cell, tissue, organ, organ system


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