VA SOL Biology

Bay grasses are important to the ecology of the Chesapeake Bay because they (more than one is correct - choose all that apply!

• Produce nitrogen for fish to breath

• Make a great home for the alligators in Canada

• Help filter and clean the water by trapping leaves, sticks, and other debris

• Produce a lot of oxygen for fish when they do photosynthesis

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What is dissolved oxygen? (more than one is correct - choose all that apply!)

• For land animals, it is oxygen dissolved in nitrogen - what we call air

• For animals that live in the water, it is oxygen dissolved in water - fish breath it

• It is the O in H2O and fish breath it

• It is not the O in H2O because fish gills cannot break a covalent bond

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NGSS.MS-LS2-1

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Turbidity is a measure of

• the amount of salt in water

• the amount of dirt in water

• the amount of oxygen in water

• the amount of nitrogen & phosphorus in water

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Algae is (more than one is correct - choose all that apply!)

• commonly called pond scum

• microscopic phytoplankton

• a tiny plant that multiplies rapidly if there is fertilizer in the water

• a little animal with claws and teeth

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A keystone species is the one (or two) species that an ecosystem depends on; without them, the entire ecosystem will collapse and die. What are the 2 keystone species in the Chesapeake Bay? (choose two)

• whales

• striped bass

• oysters

• bay grasses

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The Chesapeake Bay is the largest estuary in the United States. What is an estuary?

• It is a high place that separates two watersheds

• It is a large area of land that drains rain into a bay

• It is a mixture of fresh and salt water

• It is the place where rivers meet the ocean

Abiotic factors in the Chesapeake Bay are (more than one is correct - choose all that apply!)

• Living or once living (dead)

• Never living and never will be

• Air, water, rocks, metal, dirt

• Animals, plants, fungi, and bacteria

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Which of the following is a characteristic of living organisms according to the VA SOL Biology standards?

• Ability to move

• Ability to reproduce

• Ability to change color

• Ability to generate electricity

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In a controlled experiment, which variable is manipulated to observe its effect on the dependent variable?

• Independent variable

• Dependent variable

• Control variable

• Extraneous variable

What is the primary function of the mitochondria in eukaryotic cells?

• Photosynthesis

• Protein synthesis

• Energy production

• Cell division

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