AICE Marine Science Paper 2 Review

Which of the following skills would you NOT be asked to do on Paper 2?

• biological drawing

• graphing

• create a data table

• calculate biodiveristy without an equation

Tags

NGSS.HS-LS2-2

Use the dichotomous key in the picture to identify the fish.

• C. triangulum

• C. trifascialis

• C. melannotus

• C. citrinellus

Identify what is wrong with the data table shown in the picture.

• MIssing the units for density

• Missing the units for water temperature

• A ruler was not used to draw the lines

• the data in the density column should increase, not decrease down the column

Describe the overall trend seen in the graph.

• As the temperature of the water increases, the density increases.

• As the temperature of the water increases, the density decreases.

• As the temperature of the water increases the density grows exponentially.

• As the temperature of the water increases, the density remains approximately the same.

Scientists used the mark-release-recapture method to estimate the size of a population of fish. In the first sampling they caught 52 fish in the nets. The fish were marked and released. 1 week later scientists put out nets again to catch a new sample of fish. They caught 41 fish this time. Of the 41 fish, 12 were recaptures. Estimate the population size.

• 21 fish

• 112 fish

• 178 fish

• 969 fish

Tags

NGSS.MS-LS2-1

Identify a tertiary consumer in the food web pictured.

• diatoms

• anchovy

• crab larvae

• shark

Tags

NGSS.MS-LS2-3

Calculate the percentage of energy that is transferred from the tuna to the shark. Use the values given in the pictured food webs.

• 0.095%

• 9.5%

• 10.6%

• 90.5%

Tags

NGSS.MS-LS2-3

The data table pictured shows data regarding mangrove species in two differet areas (area X and area Y). Complete the table. What is the total number of species in area X?

• 96

• 117

• 120

• 134

Tags

NGSS.MS-LS2-1

TRUE or FALSE: The hypothesis of an experiment can be proven if enough data is collected.

• True

• False

Tags

NGSS.MS-LS2-4

An experiment is conducted to determine the impact of a decrease in water pH on the thickness of scallop shells. 8.10 is the natural pH of ocean water.

Scientists have 5 tanks, each with water of various pHs: 8.10, 8.05, 8.00, 7.95, and 7.90. The scientists placed 50 scallops into each tank. Prior to placing them in the tanks, they measured the thickness of each and calculated the averages for the shells in each tank. After 2 months, they remeasured the thickness of the shells and calculated the averages, looking to see if there had been any changes.

What is the dependent variable in this experiment?

• the average thickness of the shells

• the number of scallops in each tank

• the different pHs from the tanks

• the known average pH of ocean water (8.1)

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4