#Question id: 10200
#Unit 6. System Physiology – Plant
Following are some facts regarding C3 and C4 Plants
a.) In C4 plants the reduction is caused by the additional energy requirements such as 1 ATP per CO2 from C3 plants
b.) C4 leaves are exposed to low O2 concentrations, the quantum yields for CO2 fixation remain constant while C3 leaves are exposed to low O2 concentrations quantum yield increases
c.) C3 leaves are exposed to low O2 concentrations, photorespiration is maximized
d.) Plant with the C4 metabolism need more rubisco than C3 plants to achieve a given rate of Photosynthesis
Which of the following combination would be correct?
#Question id: 10201
#Unit 6. System Physiology – Plant
Chloroplasts orientation in Algae is controlled by
#Question id: 10202
#Unit 6. System Physiology – Plant
What will happen if C4 leaves are exposed to low O2 concentrations?
#Question id: 10203
#Unit 6. System Physiology – Plant
Light-response curves of photosynthetic carbon
fixation in sun and shade plants. Typically, shade plants have a low light
compensation point and have lower maximum photosynthetic rates than sun plants
this is because respiration rates in shade plants are very low; which of the
following graph is correct?
#Question id: 10204
#Unit 6. System Physiology – Plant
When exposed to excess light, leaves must dissipate the surplus absorbed light energy to prevent damage to the photosynthetic apparatus. There are several routes for energy dissipation that involve,
#Question id: 10205
#Unit 6. System Physiology – Plant
The xanthophyll cycle, which comprises the three carotenoids violaxanthin, antheraxanthin, and zeaxanthin, establishes an ability to dissipate excess light energy in the leaf, Under high light the conversion of the carotenoids such as