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Science OAA Review #1
Test Description: 8th grade science review
Instructions: Answer all questions to get your test result.
1) River was walking down the hallway when her brother, Simon, jumped out and yelled “boo!” River reacted by jumping back quickly. Which organ systems are involved in reflex actions
A
B. Immune and respiratory
B
D. Nervous and digestive
C
C. Endocrine and sexual
D
A. Muscular and skeletal
2) Species A is a predator species, and species B is a prey species. What would be the first thing to happen if all of species A were removed from the ecosystem?
A
A predator species similar to species B will experience rapid population growth.
B
D. Other predator species will move into the ecosystem
C
B. There will be a time of rapid population growth of species B.
D
C. The amount of disease in species B will increase to limit population
3) Which of the following structures can be found in the plant cell but not in the animal cell?
A
cell wall
B
mitochondria
C
vacuoles
D
endoplasmic reticulum
4) Which of the following is a biotic resource in a region?
A
D. The quality of soil
B
B. The quantity of freshwater
C
C. The number of plants
D
A. The average hours of sunlight
5) Which of the following is an example of an inherited trait?
A
C. A chimpanzee fishes for bugs with a stick.
B
D. A bird grows red feathers.
C
B. A human speaks Spanish.
D
A. A dog begs at the dinner table.
6) . After a wildfire, many plant and insect species in the food web died out. One season later, however, several grasses grew back. What adaptation of these grasses most likely ga
A
D. Producing seeds that catch fire easily
B
B. Having a higher plant height than neighboring species
C
A. Growing deep root systems
D
C. Displaying bright flower colors to lure insects
7) Which cell structure carries out a function for a cell that is similar to the function that bark carries out for a tree?
A
chloroplast
B
mitochondria
C
cell wall
D
nucleus
8) What is the role of the mitochondrion in the cells?
A
A. It converts sunlight to energy
B
D. It breaks down sugar to release energy.
C
C. It transports water throughout the cell
D
B. It controls all functions of the cell
9) Which two plant cell structures are responsible for storing energy from sunlight and later releasing it for energy?
A
A. Chloroplast and mitochondrion
B
B. Mitochondrion and cell wall
C
C. Chloroplast and nucleus
D
D. Nucleus and cell wall
10) Bass tapeworms attach to the gills and intestines of bass fish. Theses worms survive by taking nutrients from the bass. What type of relationship is this?
A
parasitism
B
predation
C
mutualism
D
commensalism
*select an answer for all questions
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