Which of the following mineral helps in nitrogen fixation?
copper
zinc
molybdenum
magnesium
Gray spots of oat are caused by the deficiency of
Zn
Mn
Fe
Cu
The mass flow hypothesis was first described by
Swanson
Buchana
Munch
Kurosawa
Which of the following elements is almost non-essential for plants?
Ca
Mo
Na
The element molybdenum participates in
flowering
nitrogen fixation
chromosome coiling
carbon assimilation
In which of the following form, sugar is transported within the body of a plant?
sucrose
lactose
glucose
maltose
The end product of gycolysis is
fructose
ethyl alcohol
pyruvic acid
The active transport mechanism is against concentration gradient and
requires ATP
does not require ATP
requires protein
does not requires protein
A thin film of water, held by the soil particles, under the influence of internal attractive force, is called which of the following water?
capillary
combined
hygroscopic
gravitational
Which one of the following mineral element plays an important role in biological nitrogen fixation.?
manganese
