Chapter 5

Question 1

autotrophs

Answer 1

organisms that can produce their own food using light, water, carbon dioxide, and other chemicals.

Question 2

types of autotrophs

Answer 2

1. photoautotrophs
2. chemoautotrophs

Question 3

photoautotrophs

Answer 3

solarenergy>CO2> OrganicM

Question 4

Chemoautotrophs

Answer 4

inorganic chemical>CO2>OrganicM

Question 5

NPP

Answer 5

Net Primary Production

Question 6

NBP

Answer 6

Net Biome Production

Question 7

NEP

Answer 7

Net Ecosystem Production

Question 8

GPP

Answer 8

Gross Primary production

Question 9

T/F: the tropics contributes the most to the global Net Primary Production

Answer 9

True

Question 10

why global NPP is increasing?

Answer 10

warmer temp and higher concentration of CO

Question 11

Rubisco

Answer 11

The most abundant enzyme on planet earth
_ Ribulose 1,5 bisphosphate carboxylase/oxygenase
_ fixes CO2 into sugar

Question 12

T/F: Photosynthetic machinery contain lots of nitrogen , thus they are important for primary production

Answer 12

True

Question 13

Midday depression

Answer 13

a reduction of
photosynthesis during the hottest
hours of a day caused by closing of
stomata in order to save water

Question 14

LAI

Answer 14

Leaf area index= total leaf area per projected ground area

Question 15

T/F: Net Primary Production and Leaf Area Index
are positively related

Answer 15

True

Question 16

advantage of SLA

Answer 16

Large area to capture photons per invested mass

Question 17

Advantage of low SLA

Answer 17

Sturdy leaves , more efficient use of photons in full sunlight

Question 18

Justus von Liebig

Answer 18

German scientist 1803-1873
Pioneer in plant mineral nutrition