The plants make glucose from
stem and root
water and oxygen
water and minerals
water and carbon dioxide
The major portion of the dry weight of plants comprises of
carbon, hydrogen and oxygen
carbon, nitrogen and hydrogen
calcium, magnesium and sulphur
nitrogen, phosphorus and potassium
Electroosmotic theory for translocation of solutes was proposed by
Bose
Deurjes
Spanner
Watson
Which one of the following mineral element plays an important role in biological nitrogen fixation.?
zinc
copper
manganese
molybdenum
A plant require potassium (K) for
synthesizing proteins
synthesizing chlorophyII
holding its cells together
opening and closing of its stomata
The active transport mechanism is against concentration gradient and
requires ATP
does not require ATP
requires protein
does not requires protein
'Dry rot of sugar beet' is caused by
boron
cobalt
nickle
Which of the following micronutrients are required for plant growth?
sodium, nickel and chloride
copper,zinc and molybdenum
sodium,potassium and boron
The uptake of soil ions, by the root system, is a process of
osmosis
imbibition
absorption
diffusion
Inorganic nutrients are present in the soil in the form of
atoms
molecules
parasite
ions