MHS_Test Review Marine Science 1

Multiple Choice

What is ecology?

• The study of individual organisms

• The study of interactions between organisms and their environment

• The study of rocks and minerals

• The study of celestial bodies.

Multiple Choice

Which of the following is a biotic factor in a marine ecosystem?

• Sand

• Water

• Fish

• Sunlight

Multiple Choice

What is described in this image?

• Fishafication

• Nitrification

• Calcification

• A food chain

Multiple Choice

What do nitrosomona bacteria do in the nitrogen cycle?

• Help the fish grow faster

• Convert nitrites to nitrates

• Convert ammonia to nitrites

• Convert ammonia to nitrates

Multiple Choice

What is biodiversity?

• The variety of life forms on Earth

• The study of individual species

• The process of evolution

• The study of rocks and minerals

Multiple Choice

Why do heterotrophs rely on other organism for energy?

• They are unable to move and must consume nearby organisms

• They are too small to produce their own food

• They prefer the taste of other organisms

• They cannot perform photosynthesis

Multiple Choice

What is the best definition of an autotroph?

• They obtain energy from other organisms

• They play a crucial role in food webs and ecosystems

• They can produce their own food through photosynthesis

• They include animals like fish, sharks, and whales

Multiple Choice

What is the purpose of peer review
in the scientific method?

• To ensure that experiments are conducted in secret

• To hide scientific discoveries from the public

• To publish research findings in popular magazines

• To provide constructive feedback and evaluate the validity of research

Multiple Choice

What is a hypothesis?

• A well-established scientific fact

• A summary of experimental results

• A mathematical equation

• A possible explanation for a specific observation or question

Multiple Choice

What does pH measure?

• The concentration of oxygen in water

• The temperature of the ocean

• The salinity of seawater

• The acidity or alkalinity of a solution

Multiple Choice

What is the salinity of seawater?

• 0 ppt

• 35 ppt

• 15 ppt

• 45 ppt

Multiple Choice

What is a food chain?

• The amount of food in an ecosystem.

• A step-by-step system of organisms, each dependent on the next as a source of food.

• The diversity of animals in an ecosystem.

• Autotrophs

Multiple Choice

What is the definition of non-native species?

• An organism that is visiting it's relatives.

• Organisms that don't occur naturally in an area as the result of human activities.

• Exotic organisms that increase the biodiversity of an ecosystem.

• Beneficial organisms that increase beauty and diversity in an ecosystem.

Multiple Choice

What is eutrophicatioin?

• Rapid growth of plants that can cause a decrease in oxygen and the death of organisms.

• High salinity.

• The change of ammonia to nitrates.

• Death of aquatic organisms caused by excessive oxygen in the water.