Pinus Taxus and Picea belong to_________________??
A. Spheospsida
B. Filicineae
C. Gymnosperms
D. Angiosperms
Category: Biology Mcqs
Excessive increase in temperature of medium causes the enzyme molecule to____________??
A. Activate
B. Unaffected
C. Denatured
D. None of these
Golden brown colour of diatoms is due to presence of__________??
A. Mycoxanthin, mucoxanthin and myxoxanthophylls
B. Alpha and beta carotenes and myxoxanthin
C. Fucoxanthin, diatoxanthin, diadinoxanthin
D. None of the above
A structure formed by groups of similar cells organized into loose sheetsor bundles performing similar functions is called as________??
A. An organ
B. An organism
C. A Tissue
D. A Cell
Nitrifying bacteria are the examples of___________??
A. Hetrotrophic bacteria
B. Chemosynthetic bacteria
C. Saprophytic bacteria
D. Parasitic bacteria
Membranes of the grane are sites where??
A. Oxygen is stored
B. Food is stored
C. Sunlight is trapped
D. CO2 is stored.
Embryonic induction is caused by part developing from_____________??
A. Endoderm
B. Ectoderm
C. Mesoderm
D. Extraembryonic layers
Deficiency of which of the following causes chlorosis__________________??
A. Nitrogen
B. Magnesium
C. Iron
D. Both A and B
Kingdom protista includes_____________phyla??
A. 27
B. 28
C. 26
D. 29
A pressure created by active secretion of salts and other solutes from other cells into xylem sap is called___________??
A. Transpiration pull
B. Root pressure
C. Osmotic pressure.
D. None of these
