The technique of solution culture has been developed to avoid contamination.Justify.How?

2

(a)

With holding of any one nutrient in plant may cause one or another type of deficiency in case of plants.Discuss.

2

(a)

It is observed that deficiency of a particular element showed its symptoms initially in older leaves and than younger leaves.
a) Does it indicate that the element is actively mobilized or relatively immobile?
b) Name two elements which are highly mobile and two which are relatively immobile.
c) How is the aspect of mobility of elements important to horticulture and agriculture?

2

(a)

How are plants grown in glass containers to judge essential elements?

2

(a)

A farmer adds azotobacter culture to the soil before sowing maize. How does it increase the yield of maize?

2

(a)