EXAM QUESTIONS AND ANSWERS 100

Marine Biology - Final Exam Review

EXAM QUESTIONS AND ANSWERS 100%

SOLVED (Newest 2025) Seaweed farming in Zanzibar is a form of aquaculture carried out in shallow intertidal areas. In this cage-free method, seaweeds are attached to ropes suspended over the sediment, allowed to grow, and harvested to be dried and sold. Which of the following are true about open aquaculture of seaweed?

• Mangroves are destroyed to form semi-enclosed ponds for

the seaweed.

• Algal photosynthesis increases the carbon dioxide

concentration in the water, leading to acidification.

• Excess fish waste from the cages can cause

eutrophication.

• Compared with raising salmon in open-sea cages, the

environmental impact is relatively low. - Correct Answers ✅D. Compared with raising salmon in open-sea cages, the environmental impact is relatively low.Aquaculture of sponges and bivalves has more negative environmental impact than shrimp (also known as prawn) aquaculture because filter-feeding sponges and bivalves reduce water quality. T/F - Correct Answers ✅False

Green algae are characterized by:

• Being prokaryotic
• Having pigments similar to land plants
• Requiring hydrophilic pollination for sexual reproduction 1 / 3

Marine Biology - Final Exam Review

EXAM QUESTIONS AND ANSWERS 100%

SOLVED (Newest 2025)

• Having true roots - Correct Answers ✅B. Having

pigments similar to land plants

Flowering plants that are salt tolerant are called:

• Halophytes
• Sporophytes
• Algae
• Conifers
• Haptophytes - Correct Answers ✅A. Halophytes

In the Caribbean, parrotfish, surgeonfish, and sea urchins can limit the distribution of fleshy macroalgae. As fish populations recover within a Marine Protected Area, how is competition for space on the benthos likely to be affected? (Assume both parrotfish and surgeonfish are increasing in abundance.)

• There will be increased competition for space among

species of macroalgae

• There will be more competition for space between

macroalgae and corals

• There will be less competition for space between

macroalgae and corals

• There will be no affect on competition for space because

the increase in predatory grouper initiates a trophic cascade that benefits algae - Correct Answers ✅C. There will be less competition for space between macroalgae and corals 2 / 3

Marine Biology - Final Exam Review

EXAM QUESTIONS AND ANSWERS 100%

SOLVED (Newest 2025) In Darwin's classic sequence of coral reef development, atolls form first and then gradually grow toward the center, forming a barrier reef and finally a fringing reef. T/F - Correct Answers ✅False Which of the following is the best way to test a hypothesis?

• Make sure to prove the hypothesis to be true
• Perform an experiment that manipulates one

environmental factor, holding the others constant

• Collect a lot of information; eventually you will have

enough to get the answer to your question

• Sample the environment exhaustively, and look for close

correlations among ecological variables - Correct Answers ✅B. Perform an experiment that manipulates one environmental factor, holding the others constant After deciding upon a likely important effect it would be best

to:

• Propose a null hypothesis, whose rejection would prove the

importance of the effect

• Propose a null hypothesis, which should never be rejected

to prove the lack of importance of the effect

• Devise a sampling scheme that measures everything in

the local environment to see the importance of the effect

• / 3