11. Role of inorganic nutrients plant growth and metabolism was first discovered by
12. Khaira disease of rice is due to the deficiency of
13. Mad cow disease is caused by
14. Water drops present on leaf margins of Tropaeolum, Balsam and grasses in early morning are due to
15. Black heart of potato is the result of
16. Match the following columns:
Column I
Column II
a. Nitrate-N
1. Eutrophication
b. Nitrous oxide
2. Methemo-globin emia
c. Nitrogen and phosphorus
3. Ozone layer
d. Cadmium as contaminant in zinc and phosphatic fertilizers
4. Heart and kidney disease
| Column I | Column II |
| a. Nitrate-N | 1. Eutrophication |
| b. Nitrous oxide | 2. Methemo-globin emia |
| c. Nitrogen and phosphorus | 3. Ozone layer |
| d. Cadmium as contaminant in zinc and phosphatic fertilizers | 4. Heart and kidney disease |
17. In the case of Zn deficiency of paddy, how much zinc sulphate should be applied in one hectare of soil.
18. What is correct when chromosome number in leaf cells of an angiosperm is 22
19. Chromosome number in a flowering plant can be
20. Horizontal resistance is also known as
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