When amount of CO2 taken from atmosphere (in photosynthesis) becomes equal to the amount of CO2 released in atmosphere (in respiration), this is called

Related MCQs

• A. The atmospheric concentration of CO2 at which photosynthesis just compensation point. R. The CO2 compensation point is reached when the amount of CO2 uptake is less than that generated through respiration because the level of CO2 in the atmosphere is more than that required for achieving CO2 compensation point.
• In which of the following types of respiration, the amount of energy released is comparatively more
• Both respiration and photosynthesis require (M.P.PM.T. 1989,1993,1996; CPM.T, 1984, 1988, 1989,-B.H.U. 1995;A.FMC 1995)
• The volume of O2 librated in photosynthesis has the following ratio to CO2.
• Match Column – I with given under Column – II ; choose the answer which gives correct combination: Column – I(Scientists) Column – II(Contributions) P. A pigment which absorbs red and far-red light (i) Cytochrome Q. Main pigment involved in transfer of electrons in (ii) PEP carboxylase photosynthesis is R. NADPH2 is generated through.... (iii) Photochrome S. Enzyme which fixes CO2 in C4 plants (iv) Photosystems
• Photosynthesis in C4 plants is relatively less limited by atmospheric CO2 levels because :
• In sugarcane plant CO2 is fixed in malic acid, in which the enzyme that fixes CO2 is
• A. Under conditions of high light intensity and limited CO2 supply, photorespiration has a useful role in protecting the plants from photo-oxidative damage. R. If enough CO2 is not available to utilize light energy for carboxylation to proceed, the excess energy may not cause damage to plants.
• If there was no CO2 in the earth’s atmosphere, the temperature of earth’s surface would be. CBSE1995
• In Bonellia all larva are genetically and cytologically similar. In this worm mole individuals live inthe uterus of female. If a particular larva settle near proboscis of an adult female, it becomes a male individuals. Larva develops free in water it becomes.