A. O2
B. CO2
C. SO3
D. All the above
Algal photosynthesis increases the pH of water and releases O2.
Related Mcqs:
- Main product of photosynthesis is_____________________?
A. C6H12O6
B. C12H24O12
C. C3H6O6
D. C5H12O6 - The net reaction of photosynthesis is_____________________?
A. CO2 + H2O light O2 + (CH3O)
B. CaCO3 + 2HCl CaCl2 H2O+CO3
C. ((CH2O) + O2 CO2 + H2O)
D. None of the above - Items needed for synthesis of plant food in green leaves are _________ & the process through which it takes place is called photosynthesis:
A. Sunlight
B. Chlorophyll
C. Water & plant nutrients
D. All of the aboveSubmitted by: Shafiq Rehman
- The enzymes and pigments associated with photosynthesis are located in ___________________?
A. Leucoplast
B. Plastid
C. Chloroplast
D. Protoplast - Photosynthesis takes place in_____________________?
A. All green parts of plants
B. Only leaves
C. Only flowers and fruits
D. none - The enzymes and pigments associated with photosynthesis are located in____________________?
A. Leucoplast
B. Chloroplast
C. Chromoplast
D. Protoplast - Soil additive which stabilizes the soil, improves resistance to erosion, increases to permeability to air & water, improves texture, eases cultivation or otherwise improves soil quality:
A. Soil amendment
B. Soil conditioner
C. Both a & b
D. None of the aboveSubmitted by: Shafiq Rehman
- Sewage water consists of water and solids in the following percentage___________________?
A. 99 & 1
B. 90 & 10
C. 80 & 20
D. None of the above - Water occupied the larger soil pores and moves down readily under the force of gravity. Water in excess of the field capacity is termed:
A. Capillary water
B. Hygroscopic water
C. Gravitational water
D. None of the aboveSubmitted by: Shafiq Rehman
- Nitrogen & sulphur dioxide liberate from motor vehicles & industries. Nitrogen & Sulphur gases dissolve in the water vapour of atmosphere & form nitric & sulphuric acid. This rain water falls on soil as__________ & contaminates soil also:
A. Acid rain
B. Neutral rain
C. Both A & B
D. None of the aboveSubmitted by: Shafiq Rehman
1 Comment
correct answer is : 02
When nutrients and sunlight are sufficiently present, higher stream temperatures lead to more algal growth. During the day, algae absorb carbon dioxide from the water for cell growth, raising pH. At night, photosynthesis stops and algae continue to respire, releasing carbon dioxide and lowering pH.