Nutrient/ Food Webs

Question 1

limiting factor

Answer 1

factor in environment that can be harmful is present in quantities that are ttoo larger or too small

Question 2

what factor are important for marine species?

Answer 2

temperature, salinity, light, oxygen, phytoplankton

Question 3

What factor is most limiting for phytoplankton growth?

Answer 3

Nitrogen

Question 4

what is a limiting factor for photosynthesis?

Answer 4

light

Question 5

Euphotic Zone

Answer 5

enough light for vision and photosynthesis

Question 6

disphotic zone

Answer 6

enough light for visions

Question 7

aphotic zone

Answer 7

no sunlight at all

Question 8

how much of the radiation raching the earth reaches the ocean?

Answer 8

50%

Question 9

what kind of radiation doesn’t penetrate deeply in the ocean?

Answer 9

UV: scattered
IR: heat

Question 10

What is PAR?

Answer 10

Photo-synthetically active radiation

Question 11

What wavelength is absorbed first and last in the ocean?

Answer 11

First: Red
Last: Blue

Question 12

What factors other than wavelength influence the depth where light is absorbed?

Answer 12

the clarity

generally penetrates deeper in the open ocean than the coastal waters

Question 13

carbon

Answer 13

present in all organic molecules

Question 14

nitrogen

Answer 14

found in proteins and nucleic acid

Question 15

phosphorous/ silicon

Answer 15

rigid parts of organism

Question 16

iron and trace metals

Answer 16

used for electron transport

Question 17

where are nutrient levels low and why?

Answer 17

Near the surface because they are taken up by phytoplankton