81. Photosynthesis is a process in which ________ compounds of carbon (CO2) and hydrogen (H2O) are reduced to carbohydrate like (glucose) using light energy.
Organic
Energy-rich
Energy-poor
Reduced
✅ The correct answer is option C.
Biology
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82. The branch of biology which deals with the study of chemical compounds and the chemical processes in the living organisms is called:
Chemistry
Biochemistry
Molecular biology
Both a and b
✅ The correct answer is option B.
84. C6H12O6 + 6O2? 6CO2 + 6H20 + ENERGY represents:
Photosynthesis
Aerobic respiration
Anaerobic respiration
Respiration
✅ The correct answer is option B.
86. Abiotic components include
Atmosphere
Hydrosphere
Lithosphere
All of these
✅ The correct answer is option D.
87. At which times there is no net gaseous exchange between leaves and the atmosphere.
Daytime.
Night time.
Dawn & Dusk.
Midnight.
✅ The correct answer is option C.
88. Which chemical component has the same % in bacterial as well as the mammalian cell?
Water
Carbohydrate
Proteins
Lipids
✅ The correct answer is option A.
89. Which of the following is a compensation point:
Leaves respire and utilize O2 and release CO2.
Photosynthesis and respiration occur at the same rate. So there is no net exchange of gases between atmosphere and plants.
The rate of photosynthesis increases, so does the O2 production, with a net release of oxygen coupled with the uptake of CO2.
The rate of respiration becomes more than the rate of photosynthesis.
✅ The correct answer is option B.
90. Which chemical component has the greatest contribution in the total mammalian cell weight?
Proteins
Carbohydrate
Lipids
Water
✅ The correct answer is option D.