The chemical formula of carotene obtained from carrot is.
Which of the following mineral helps in nitrogen fixation?
Which element is located at the centre of the porphyrin ring in chlorophyII?
Bidirectional translocation of minerals takes place in
The plants absorb Zn as
'Dry rot of sugar beet' is caused by
Which one of the following mineral element plays an important role in biological nitrogen fixation.?
In which of the following form, sugar is transported within the body of a plant?
A thin film of water, held by the soil particles, under the influence of internal attractive force, is called which of the following water?
Gray spots of oat are caused by the deficiency of