Ch.7

Question 1

How are organisms in an aquatic ecosystem grouped

Answer 1

location and adaption

Question 2

Where do many benthic organisms live?

Answer 2

attached to hard surfaces

Question 3

Most of the food for an aquatic ecosystem is produced by ____________________.

Answer 3

phytoplankton

Question 4

aquatic organisms that float near the surface of the water.

Answer 4

plankton

Question 5

aquatic organisms that break down dead organisms

Answer 5

decomposers

Question 6

microscopic plants

Answer 6

phytoplankton

Question 7

microscopic animals

Answer 7

zooplankton

Question 8

benthos

Answer 8

aquatic organisms that dwell at the bottom of the water.

Question 9

nekton

Answer 9

aquatic organisms that are free-swimming.

Question 10

littoral zone

Answer 10

nutrient rich zone near the shore, aquatic life is diverse and abundant.

Question 11

bonthic zone

Answer 11

bottom of a lake inhabited by decomposers, insect large and small

Question 12

eutrophication

Answer 12

increase in the amount of nutrients in an aquatic ecosystem.

Question 13

increases in algae, increase in decomposer feeding on decaying organisms, bacteria use dissolved oxygen (DO) in water, organisms are killed or stressed by low DO

Answer 13

What are the 4 things that the Eutrophication can do?

Question 14

wetlands

Answer 14

an area of land that is periodically underwater or whose soil contains a great idea of moisture

Question 15

salinity

Answer 15

a measure of the amount of dissolved salts in a given amount of liquid.

Question 16

plants and animals

Answer 16

What types of organisms do estuaries support?

Question 17

How do oysters, barnacles, and clams feed?

Answer 17

filtering plankton out of the water

Question 18

What do dolphhins, seals, and other mammals eat?

Answer 18

freshwater and saltwater

Question 19

How many of the world’s 10 largest urban areas are built on estuaries?

Answer 19

tokyo, new york, shanghai, buenos aires, rio de jenia, bombay

Question 20

the process by which plants, algae, and some bacteria use sunlight, carbon dioxide, and water to produce carbohydrates and oxygen

Answer 20

photosynthesis

Question 21

an area in which fresh water from a river mixes with salt water from the ocean.

Answer 21

estuary

Question 22

contains large amounts of plants as a result of high levels of nutrients.

Answer 22

eutrophic lake

Question 23

areas of land that are covered with fresh water for at least part of the year.

Answer 23

freshwater wetlands

Question 24

contain non-woody plants

Answer 24

marshes

Question 25

dominated by woody plants

Answer 25

swamps

Question 26

coastal lands areas that are covered by salt water for all or part of the time.

Answer 26

coastal wetlands