Graphing Natural Selection Wizer 2

Bengal tigers live in jungles and have two variations: dark orange and black stripes, and albino and black stripes. Orange tigers hunt using camouflage. Albino tigers are larger and more powerful and take territory from orange tigers. That allows the albinos a chance to hunt for food. What type of tiger is in the image above?

• orange and black

• albino and black

Tags

NGSS.MS-LS4-4

Look at the graph and answer the question. How many years did the scientists study the tigers?

• 2

• 3

• 4

• 5

Describe the tiger populations over time.

• the orange tigers are decreasing and the albino tigers are increasing

• the orange tigers are increasing and the albino tigers are decreasing

• both types of tigers are staying the same

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

The orange tigers rely on hunting skills to survive, and the albino tigers rely on taking territory from the orange tigers. Based on the graph, which type of survival adaptation is more successful?

• orange tigers' hunting skills

• albino tigers' territory battles

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Based on the graph, what is there more of, more food for good hunters, or more territory for stronger tigers? (remember which type survives better?)

• more food for good hunters

• more territory for stronger hunters

Tags

NGSS.MS-LS2-1

Electric eels are strange fish that look almost like snakes. They have very small eyes and do not see very well, but they can make an electric shock to stun their prey. One year a mutation caused some eels to have much better vision. Look at the graph of their population changes over time. In the bar graph, which color bars are the mutated eels?

• normal eels

• eels with eye mutations

Tags

NGSS.MS-LS3-1

NGSS.MS-LS4-4

Which eels are more successful over time, the mutated eels with better eyesight or the normal eels with poor eyesight?

• normal eels with poor eyesight

• eels with eye mutations for better eyesight

Tags

NGSS.MS-LS3-1

NGSS.MS-LS4-4

Why do you think the eels with better eyesight are more successful at surviving?

• better eyesight is helpful for the eels to find food and hide

• eels only need normal poor eyesight

Tags

NGSS.MS-LS3-1

NGSS.MS-LS4-4

If the graph continues in the same pattern, what will happen to the two eel populations?

• The normal eels will survive and reproduce more.

• The mutated eels will survive and reproduce more.

Tags

NGSS.MS-LS3-1

NGSS.MS-LS4-4

Look at the picture of the steps of natural selection. Choose the best graph to match the picture. Only use the pattern of the graph, not the numbers of the actual mice.

• 
• 
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Tags

NGSS.MS-LS3-1

NGSS.MS-LS4-4