Aquatics Final Review

Why do scientists use sampling?

• To create new habitat

• Because each part of an ecosystem is connected to and depends on all the others

• Because ecosystems may change in response to natural or human-caused events

• To estimate populations without having to count each organism

Answer explanation

Samples are easier to collect data from because they are practical, cost-effective, convenient, and manageable.

Tags

NGSS.MS-LS2-1

Which of the following is not a way that wetlands improve our environment?

• Wetlands are not good places to be used as a nursery or spawning ground

• Wetlands maintain water quality by filtering out pollutants in runoff

• Wetlands help reduce flood damage by acting like a sponge

• Wetlands help to recharge aquifers because they slow down the flow of rainwater

Answer explanation

Also known as “nature's nurseries,” wetlands provide a rich, environment for the development of young amphibians, fish, birds, insects, and mammals.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

What is biodiversity?

• A complex web of relationships between living and non-living things

• The variety and number of different organisms and populations, and the way they live together

• The kinds of aquatic ecosystems found in Texas

• None of the choices are the correct answer

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-5

Which of the following statements describes the oxygen level in a pond?

• The amount of oxygen dissolved in the water stays pretty even over a 24- hour period.

• The water is too deep for plants to grow on the bottom, making it oxygen poor.

• Oxygen levels are high each day while the sun is shining and plants are photosynthesizing, but they can drop dramatically at night

• None of the answers given are correct.

Answer explanation

Dissolved oxygen increases during daylight hours when photosynthesis is occurring and decreases at night when respiration continues but photosynthesis does not.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Some human activities that reduce aquatic biodiversity include _____.

• Draining a wetland

• Damming a river

• Pumping water out of an aquifer

• All of the answers given are correct

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

A ______ is a partly enclosed body of water along the coast where one or more streams or rivers enter and mix freshwater with seawater, while ________ is a body of water enclosed by land that is directly open or connected, to the ocean

Which of the following does not explain how freshwater inflow effects bays and estuaries?

• Provide freshwater for plants

• Provide for many niches (roles) in an estuary ecosystem

• Provide nutrients to feed fish, wildlife, and invertebrates

• All of answers given are incorrect

Tags

NGSS.MS-LS2-4

How are estuaries connected to oceanic organisms?

• Estuaries provide provide a nursery grounds for oceanic organisms

• Estuaries provide sunlight for oceanic organisms.

• Estuaries provide primary food for oceanic organisms.

• Estuaries provide excess dissolved oxygen for oceanic organisms.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Why is ocean water denser that fresh water?

• Ocean water contains more salt than fresh water

• Ocean water is deeper that most bodies of fresh water

• Ocean water has waves that move the water around

• Ocean water contains more organisms than fresh water

Which letter represents the intertidal zone?

• A

• B

• C

• D

Tags

NGSS.MS-LS2-1