Which enzyme is responsible for the initial carboxylation in C4 plants?
PEP carboxylase
RuBisCO
Kinase
Dehydrogenase
Related Questions
During photorespiration, RuBisCO binds to which molecule instead of CO2?
Oxygen
Nitrogen
Hydrogen
Water
Which of the following metabolites is transported from mesophyll cells to bundle sheath cells in C4 plants during active photosynthesis?
3-Phosphoglycerate (3-PGA)
Glyceraldehyde 3-phosphate (G3P)
Pyruvate
Malate or aspartate
I. Tomato
II. Black pepper
III. Mango
From the above option choose the correct answer in respect of greenhouse crops
I and III
III and II
I, II and III
I and II
A researcher is studying a C4 plant under controlled conditions. They suddenly increase the oxygen concentration in the environment while maintaining constant light and CO2 levels. Which of the following is the MOST likely immediate consequence?
A significant decrease in the rate of photosynthesis
A slight increase in photorespiration
A significant increase in the rate of photosynthesis
No change in the rate of photosynthesis or photorespiration
In photorespiration, RuBP is converted to:
PGA and phosphoglycolate
Two molecules of PGA
Two molecules of phosphoglycolate
PGA and oxaloacetate
The process which makes major difference between and plants is
respiration
glycolysis
Calvin cycle
photorespiration
Oxygenic photosynthesis occurs in?
Oscillatoria
Rhodospirillum
Chlorobium
Chromatium
In C4 plants, the initial carboxylation reaction occurs in:
Mesophyll cells
Bundle sheath cells
Both mesophyll and bundle sheath cells
Neither mesophyll nor bundle sheath cells
Substrate for pyruvic kinase is
Pyruvic acid
PEP
PGA
1,3 – bis PGA
Which type of plants primarily utilize the C4 pathway?
Plants in hot, dry environments
Plants in cool, shaded environments
Aquatic plants
All plants
