8B and 9A

8B. While visiting a national park, a student encounters an unfamiliar organism in a damp area near a body of water. The student notes that the organism is about 10 cm long, has four legs, and has a tail. The organism is black with small white spots on its smooth, moist skin. It also appears to have an internal skeletal system. To which class does the organism most likely belong?

• Reptilia
• Amphibia
• Mammalia
• Insecta

8B. This dichotomous key can be used to identify some conifers.
Based on the key, which of these best describes the leaves and cones of the longleaf pine?

• Needle-like straight leaves that are mostly over 25 cm long and found in clusters of three; no thorns on cones
• Flattened and scale-like leaves that are mostly over 25 cm long; soft and leathery cones
• Needle-like straight leaves with a length of 25 cm that are mostly found in clusters of five; thorny cones
• Leaves with a length of 25 cm that are found in clusters of more than five; no thorns on cones

8B.  Frogs and toads belong to the order Anura.  The smallest organism in this order is about 7 millimeters long, while the largest member is about 30 centimeters long.  Which of these lists best describes this order?

• A
• B
• C
• D

8B. A cladogram is shown below.  All the animals to the right of the hagfish would have the common characteristic of-

• fur
• claws or nails
• lungs
• jaws

Tags

NGSS.MS-LS4-2

8B.  Using a light microscope, a student identified the following characteristics of four organisms found in a sample of pond water.  Based on the observations of the student, which organisms most likely belong to the taxonomic group for bacteria?

• Organisms 1 and 2
• Organisms 3 and 4
• Organisms 1 and 4
• Organisms 2 and 3

8B.  The diagram shows a dichotomous key and a picture of a fruit.  According to the key, the fruit comes from which species of tree?

• Fraxinus americana
• Fraxinus nigra
• Acer platanoides
• Acer negundo

8B. A student collected the animal shown below on a field trip. The student used a dichotomous key and a microscope to classify the animal. How should this animal be classified?

• Arthropoda
• Annelida
• Mollusca
• Platyhelminthes

9A.  A student preparing for a hike wants to pack a snack that has biomolecules that provide quickly available energy but few excess calories.  Which nutrition label list the best combination of biomolecules that provide quickly available energy while providing the fewest calories from other types of biomolecules?

• A
• B
• C
• D

9A.  A student preparing for a hike wants to pack a snack that has biomolecules that provide quickly available energy but few excess calories.  Which nutrition label list the best combination of biomolecules that provide quickly available energy while providing the fewest calories from other types of biomolecules?

• A
• B
• C
• D

9A.  The differences between two molecules include the type of sugar that forms a section of the molecules and the identity of one of the four nitrogenous bases that make up another section of the molecules.  These two molecules are -

• proteins
• lipids
• nucleic acids
• complex carbohydrates