Day 10 - 8th Grade Science STAAR Review THMS

The arctic hare in the picture is shown camouflaged in the snow from possible predators. However, when summer arrives, what trait(s) will allow this hare to avoid predators? 

• its long ears for keen hearing and fast hind legs
  
• the ability to eat lots of grass
  
• its relatively small size in comparison with predators 
• the thickness of its fur 

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NGSS.MS-LS1-5

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In question #1, what would happen if the arctic hare did not have these specific traits? 

• The species would become overpopulated. 
• The chance of young hares surviving to adulthood and reproducing would be greatly diminished. 
• The hare would be a popular target for game hunters. 
• All of the above. 

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NGSS.MS-LS1-5

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In the graph below, what is a possible reason why the population of “gray” peppered moths in England changed? 

• Human pollution during the industrial revolution changed the moths’ natural habitat. 
• The number of predators increased. 
• The moths’ food source vanished. 
• The moths were unable to reproduce. 

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NGSS.MS-LS2-1

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The polar bear depends on sea ice in order to hunt for seals. If arctic temperatures increase, what is the long- term outlook for polar bears? 

• polar bear population will gradually increase
  
• polar bear population will gradually decrease 
• polar bear population will remain unchanged 
• polar bears will adapt quickly to new food sources 

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NGSS.MS-LS1-5

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Jessie catches a fish with the following characteristics:
√Oval-shaped body
√No barbels
√Forked tail fin

This fish is most likely a:  

• catfish
  
• rainbow trout 
• bluegill 
• largemouth bass 

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What statement best completes the chart  

• greater variation in the genes of offspring makes them less susceptible to disease 
• allows for rapid reproduction in large numbers 
• genetic traits are likely to be an exact match of one the offspring’s parents, but not the other 
• provides the ecosystem with more consistency 

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The heart pumps blood to the lungs, allowing the blood to become oxygenated and then carrying the oxygen to the cells within the body. This describes a key interaction between what two body systems? 

• endocrine and skeletal systems 
• circulatory and respiratory systems 
• digestive and circulatory systems 
• nervous and respiratory systems 

Which of the following characteristics best describe the animal kingdom? 

• heterotrophic, prokaryotic, unicellular 
• autotrophic, eukaryotic, multicellular 
• heterotrophic, eukaryotic, multicellular 
• heterotrophic, prokaryotic, multicellular 

In the plant cell below, which arrow is pointed to the organelle that contains the genetic material for inherited traits? 

• Structure A 
• Structure B 
• Structure C 
• Structure E 

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NGSS.MS-LS1-2

Cell theory does not include the idea that: 

• all living things are made of cells
  
• like cells carry similar functions
  
• cells use energy from food to sustain life 
• all cells in all the organisms of the same species carry the exact same genetic traits