BIOL 317: Water Relations

Question 1

Which of the following vertical aquatic zones is correctly ordered?

Answer 1

Epipelagic, mesopelagic, bathypelagic, abyssal, hadal

Question 2

The most significant photosynthetic inhabitants of the upper epipelagic zone of the open ocean are what?

Answer 2

phytoplankton.

Question 3

Estuary waters are often stratified by salinity with __________ flowing over the top of __________.

Answer 3

lower salinity river water; higher salinity ocean water

Question 4

Which of the following properties is considered a major physical difference between air and water?

Answer 4

light penetration, heat conduction, density

Question 5

Estuaries are junctions between rivers and lakes.

Answer 5

False. Estuaries are actually junctions between rivers and the ocean, where freshwater from rivers mixes with saltwater from the sea, creating brackish water.

Question 6

Oceanic water circulation systems are called what?

Answer 6

gyres

Question 7

A salt marsh is the junction between __________ and __________.

Answer 7

sea; land

Question 8

Eutrophic lakes are characterized by what?

Answer 8

high nutrient levels

Question 9

Aquatic organisms located off the ocean floor are considered what?

Answer 9

pelagic

Question 10

Oxygen is a major limiting factor in the distribution of intertidal organisms.

Answer 10

False