Hamad Biology Mcqs 08/09/2020 A. 2-3% B. 1-3% C. 1-4% D. 1-2% Related Mcqs: The first antibiotic to be discovered was_____________?A. Penicillin B. Cephalosporin C. Amino glycosides D. Erythromycin... Addition of salts and other solutes from other cells into xylem sap, __________ the water potential of the xylem sapA. Increases. B. Lowers. C. Doesn’t effect. D. Maintains.... Protonephridia are present in____________?A. Round worms B. Flateworm C. Tape worms D. Segmented worms... Empty diatom cells are called___________?A. Raphe B. Valves C. Frustule D. Girdles... Outside the thallus of Marchantia there are special structures called__________?A. stem tuber B. rhizoids C. sporangium D. none of these...
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