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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
C. Endocrine and sexual
B
B. Immune and respiratory
C
D. Nervous and digestive
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
B. There will be a time of rapid population growth of species B.
B
C. The amount of disease in species B will increase to limit population
C
D. Other predator species will move into the ecosystem
D
A predator species similar to species B will experience rapid population growth.
3) Which of the following structures can be found in the plant cell but not in the animal cell?
A
endoplasmic reticulum
B
cell wall
C
mitochondria
D
vacuoles
4) Which of the following is a biotic resource in a region?
A
D. The quality of soil
B
C. The number of plants
C
A. The average hours of sunlight
D
B. The quantity of freshwater
5) Which of the following is an example of an inherited trait?
A
D. A bird grows red feathers.
B
C. A chimpanzee fishes for bugs with a stick.
C
A. A dog begs at the dinner table.
D
B. A human speaks Spanish.
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
A. Growing deep root systems
B
D. Producing seeds that catch fire easily
C
C. Displaying bright flower colors to lure insects
D
B. Having a higher plant height than neighboring species
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
mitochondria
B
chloroplast
C
nucleus
D
cell wall
8) What is the role of the mitochondrion in the cells?
A
C. It transports water throughout the cell
B
B. It controls all functions of the cell
C
A. It converts sunlight to energy
D
D. It breaks down sugar to release energy.
9) Which two plant cell structures are responsible for storing energy from sunlight and later releasing it for energy?
A
C. Chloroplast and nucleus
B
A. Chloroplast and mitochondrion
C
D. Nucleus and cell wall
D
B. Mitochondrion 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
commensalism
B
parasitism
C
predation
D
mutualism
*select an answer for all questions
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