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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 |
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a) |
I and III |
b) |
Only II |
c) |
II and III |
d) |
I, II and III |
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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 |
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a) |
I and III |
b) |
Only II |
c) |
II and III |
d) |
I, II and III |
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(d) The criteria for essentially of an element are given below (i) The element must be absolutely necessary for supporting normal growth and reproduction. In the absence of the element, the plants do not complete their life cycle or set the seeds (ii) The requirement of the element must be specific and not replaceable by any another element. In other words, deficiency of any one element cannot be met by supplying some other element (iii) The element must be directly involved in the metabolism of the plant |