alleryWater stress lowers the rate of photosynthesis mainly by
AStopping chlorophyll a synthesis
BClosing stomata and cutting CO2
CBreaking down RuBisCO enzyme
DBlocking the splitting of water
Answer & Solution
Correct answer: B. Closing stomata and cutting CO2
Under water stress the stomata shut, which reduces the CO2 reaching the leaf.
Keep practising Photosynthesis in Higher Plants
Browse all Photosynthesis in Higher Plants questions for NEET UG, or explore more Biology topics.
Related questions
Once light is switched off, the biosynthetic phaseThe C3 pathway is more efficient than C4 underThe C4 pathway arising independently in many plant families is an example ofAt 30 degrees C, C4 grasses lose about how many water molecules per CO2 fixed?Which enzyme turns pyruvate back into PEP in C4 mesophyll?The C4 subtypes NADP-ME, NAD-ME and PEPCK are named after the enzyme used forWhich genus runs C4 photosynthesis inside single cells, without Kranz anatomy?C4 plants have dimorphic chloroplasts as bundle sheath ones