In land plants the gaseous exchange takes place through the open stomata, in submerged hydrophytes it takes place/through:
A.By general surface of the cells by diffusion
B.Lenticels
C.Stomata
D.Hydathodes
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
