Photosynthesis Paper

Question 1

Atmospheric CO2 has … in recent geological time, leading to the evolution of various mechanisms equipped to deal with this

Answer 1

declined

Question 2

The most successful mechanisms are .., ., .. and …

Answer 2

C2, C4, CAM and DIC

-Dissolved inorganic Carbon

Question 3

C4 photosynthesis allows plants to dominated .., .. areas

Answer 3

warm, dry

Question 4

C4 dominated lands differ from C3 as they lack ..

Answer 4

arboresence

Question 5

there are an estimated … photosynthetic organisms on Earth

Answer 5

350,000

Question 6

photoprotection mechanisms are the biological processes in which organisms cope with molecular damage by ..

Answer 6

sunlight

Question 7

… independant lineages of C4 evolved in past .. million years

there’s over … plant species in modern flora

Answer 7

65, 30

7500

Question 8

There are … C3 plant and algae species

Answer 8

260,000

Question 9

There are .. C4 Angiosperms

Answer 9

7500

Question 10

There are .. C2 angiosperms

Answer 10

40

Question 11

There are … CAM plant species

Answer 11

20,000

Question 12

There are .. DIC pump sieces

Answer 12

<72,500

Question 13

CO2 concentration around RuBisCO in DIC is .. ambient

Answer 13

x80

Question 14

CO2 concentration around RuBisCO in C2 is … ambient

Answer 14

x2-3

Question 15

CO2 concentration around RuBisCO in CAM is .. ambient

Answer 15

x3-4

Question 16

atmospheric O2 is .%

Answer 16

21

Question 17

> ..% of photosynthesis is respiratory

Answer 17

30%

Question 18

When did RuBisCO evolve?

Answer 18

3000ma