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1.
For the existence of nitrogen, how many nitrogen atoms are required?
2.
In the final phase of mineral absorption ions are taken up
3.
Which of the following statement is true about the passive uptake of ions?
4.
Active transport of ions by the cell requires
5.
If the size of fruits diminishes in plants, which mineral ion should be added to soil?
6.
Mineral element required by plants in the greatest amount is
7.
Premature leaf fall is due to deficiency of
8.
An element must be considered essential, when
I. the element is necessary for supporting normal growth and reproduction of the plants
II. the deficiency of that particular element can not be met by supplying some other element
III. the element is directly involved in the metabolism of the plants.
Choose the correct pair
I. the element is necessary for supporting normal growth and reproduction of the plants
II. the deficiency of that particular element can not be met by supplying some other element
III. the element is directly involved in the metabolism of the plants.
Choose the correct pair
9.
Soilless culture helps in knowing
10.
Chlorosis is caused due to deficiency of