types of photosynthesis

Question 1

Types of photosynthesis

Answer 1

C3, C4, AND CAM

Question 2

Type 1

Answer 2

Type 1: C3 Photosynthesis
Adaptive Value: More efficient under average light, temperature, and moisture.
* How: Uses RUBISCO to collect CO2 during the day and undergo photosynthesis
* Who: most plants

Question 3

Type 2

Answer 3

Type 2: C4 photosynthesis

Adaptive Value: Photosynthesizes faster under stronger light/heat conditions
* How: Eliminates Photorespiration using PEP carboxylase (enzyme), to collect CO2 during the day and hand deliver CO2 to rubisco to prevent it from binding with Oxygen
- PEP carboxylase adds CO2 to PEP to form malate
* Who: most plants

Second:

Adaptive Value: better wue
How: PEP carboxylase is faster at pulling in CO2 so stomata don’t have to be open as much so don’t lose as much water.
who: many desert summer annuals and grasses, sugar cane, weeds

Question 4

Type 3

Answer 4

Type 3: CAM Photosynthesis
* Adaptive Values:
1. Better water use efficiency 2. Cam-idling

• How
  1. Uses PEP carboxylase to collect CO2 during the night (when evaporation rates are less), stores the CO2 as oxaloacetate/malate, closes stomata during day when it conducts photosynthesis.

– Can keep stomata closed all the time, using CO2 from respiration to photosynthesize and O2 from photosynthesis for respiration.

Who: cactuses, agaves, bromeliads, pineapples