Quiz Chapter 3 Interactions in marine ecosystems

This self-grading Chapter 3 Interactions in marine ecosystems Quiz is designed to help AICE Marine Science students master key concepts needed for AICE Marine Science Exam.

With instant feedback, hints, and detailed explanations, this quiz is perfect for building confidence.

0 votes, 0 avg

Chapter 3 Interactions

1 / 12

1. Copepods may live as ectoparasites on marine fish. Explain one effect of a high parasite infestation on the host fish. [2]

Which response is strongest?

The parasites remove nutrients from the host, which may reduce its growth.

The relationship is parasitic.

Copepods live on the outside of the fish.

The fish is harmed by the parasites.

2 / 12

2. Compare photosynthesis and chemosynthesis. [4]

Select all statements that would gain credit.

Photosynthesis uses light energy, whereas chemosynthesis uses chemical energy from inorganic substances.

Photosynthesis occurs in producers chemosynthesis in consumers.

Both processes require an energy source.

Photosynthesis can produce organic compounds.

Photosynthesis can occur in the photic zone, whereas chemosynthesis can occur where light is unavailable.

Chemosynthesis occurs near hydrothermal vents.

Consider how feeding by the parasite affects the host.

3 / 12

3. Which two effects could a high infestation of parasitic copepods have on a marine fish? [2]

Increased reproductive success

Loss of nutrients from the fish

Damage to the gills

Increased growth rate

Increased nutrient availability to the fish

Ask: Who benefits? Who is harmed?

4 / 12

4. A remora attaches to a manta ray and is transported through the water. The manta ray is neither helped nor harmed.

Which statement correctly identifies and explains this interaction? [2]

Competition, because both organisms require the same resources

Mutualism, because both organisms benefit

Parasitism, because the remora obtains energy from the manta ray's tissues

Commensalism, because the remora benefits while the manta ray is unaffected

5 / 12

5. Boxer crabs carry sea anemones in their claws. Explain why this relationship is mutualistic. [2]

Which response is most likely to earn both marks?

The crab uses the anemone for protection, while the anemone obtains food from the crab's feeding activities.

The crab and anemone live closely together.

Both organisms benefit from the relationship.

The anemone has stinging cells and the crab has claws.

Consider what happens when the crab carries the anemone to different locations.

6 / 12

6. Explain how a sea anemone may benefit from its mutualistic relationship with a boxer crab. [2]

The crab injects nutrients directly into the anemone.

The crab provides the anemone with cnidocytes.

The crab provides the anemone with access to food as it moves through different areas.

The crab prevents the anemone from feeding.

7 / 12

7. Discuss how the rate of photosynthesis affects the biomass of secondary consumers. [7]

Choose all the statements that will get marks.

food is lost in digestion

producers are consumed by primary consumers

90% of energy is lost in inedible parts or because not all parts are eaten

increase in the rate of phtosynthesis will increase the amount of glucose

producers biomass is passed on along the food chaon / trophic level

approximately 10% of energy and biomass is transferred between trophic levels

producers can increase in numbers

photosynthesis makes food

glucose is used to make biomass in the form of starch/cellulose

8 / 12

8. Which statement best describes mutualism?

One organism benefit and the other is unaffected.

Both organisms are harmed by the relationship.

Both organisms benefit from the relationship.

One organism benefit and the other is harmed.

9 / 12

9. State three processes that can replenish nutrient reservoirs in the ocean. [3]

Select all statements that would gain credit.

Photosynthesis produces glucose.

Dissolving atmospheric gases

Decomposition

Consumers obtain energy by feeding.

Upwelling

Nutrients are important to organisms.

10 / 12

10. Sea bass and Peruvian anchoveta are both ecologically important. Sea bass are secondary
consumers whereas Peruvian anchoveta are primary consumers.
Discuss the ecological importance of sea bass and Peruvian anchoveta. [4]

Which of the following statements will get all the marks?

anchovy populations control the population of phytoplankton

Peruvian anchovies eat plants

Peruvian anchovies prevent algal bloom

Peruvian anchovies population would increase if sea bass decreases

sea bass are prey / food, for tertiary consumers

anchovy population would increase if sea bass decreases

sea bass, control / reduce, Peruvian anchoveta population

Peruvian anchoveta moves nutrients along the food chain

Follow the sequence: parasite → host growth → biomass → predator.

11 / 12

11. A population of marine fish experiences a large increase in parasite infestation. Explain how this could impact the trophic level of dolphins if dolphins feed on fish. [2]

Parasites remove nutrients from the fish, reducing fish growth and therefore reducing biomass available to dolphins

Parasites increase the growth rate of the fish, causing more biomass to be available to dolphins.

Parasites cause the fish to consume organisms at higher trophic levels.

Parasites increase photosynthesis within the fish population.

12 / 12

12. Explain why upwelling can increase primary productivity in marine ecosystems. [4]

Select all statements that would contribute to a full-mark answer.

Increased nutrient availability can increase phytoplankton growth and photosynthesis, increasing primary productivity.

Upwelling brings nutrient-rich deep water into surface waters, increasing nutrient availability to producers.

Upwelling occurs in some productive marine regions.

Upwelling occurs when deep water moves toward the surface.

Deep ocean water is usually colder than surface water.

Fish can be abundant in areas of upwelling.

Your score is

The average score is 0%

Need more practice?

The following resources can help you and your students prepare for AICE Exam.

AICE The Test

Need more practice?

Like this:

Report a question

Need more practice?

Share this:

Like this: