The atmosphere has less carbon than other reservoirs but, it still contains about 700 billion tones and roughly percent is annually used in photosynthesis:
A.5
B.7.5
C.10
D.12.5
Category: Agriculture Plant Physiology Mcqs
If a few cells of an alga spirogyra are kept in a strong solution, the cell contents contract away from the cell wall, this is due to:
A.Dehydration
B.Plasmolysis
C.Hydrolysis
D.Contraction
Light harvesting complexes surrounded by both photosystems (I and II) and _____ light energy to them.
A.Draw
B.Accumulate
C.Transfer
D.None of these
Prokaryota means:
A.A cell with many nuclei
B.A cell without chloroplast
C.A cell with diffused nucleus
D.A cell with one nucleus
Chemical phase in photosynthesis was discovered for the first time by:
A.Calvin
B.Blackman
C.Hill
D.Arnon
Which of the following parts of a cell is non-living?
A.Centriole
B.Vacuole
C.Ribosome
D.Mitochondria
Deficiency of iron causes:
A.Decrease in protein synthesis
B.Reduced leaves and stunted growth
C.Interveinal chlorosis first on young leaves
D.Bending of leaf tip
Sialic acid is a constituent of:
A.Cell membrane
B.Cell wall
C.Chromosomes
D.Dictyosomes
If a plant cell is immersed in water, the water continues to enter the cell until the:
A.Amount of water is the same inside the cell as outside
B.Diffusion pressure is the same inside the cell as outside
C.Concentration of the salt is the same inside the cell as outside
D.Cell bursts
Aerobic respiration is more advantageous to a large organism than anaerobic respiration because aerobic respiration:
A.Does not require sunlight
B.Produce oxygen as a waste product
C.Does not require molecules oxygen and hydrogen
D.Releases more energy from an equal amount of nutrients
