11. Ozone is toxic to expanding leaves of almost all types of plant at the concentration of equal or more than
12. Boron assists in
13. A virus that infects bacteria and destroys them is called as
14. Ions are absorbed by plants through
15. Urin contains only
16. Major role of phosphorus in plant metabolism is
17. Powdery mildew include in
18. The presence of VAM enhances uptake of nutrients in general but particularly of
19. Maximum starch is manufactured by
20. In C3 plants first stable product of photosynthesis during dark reaction is
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