11. Development of female gametophyte directly from megaspore mother cell without meiosis is called
12. Bacteria with cell wall are included in
13. Who advanced the gene for gene concept of disease resistance and susceptibility
14. Bees are important to agriculture as they
15. Nitrogen is an important constituents of
16. Silica gel was 1st developed for preservation of
17. Which of the following organic manures has the narrowest C/N ratio?
18. The effective concentration of HC toxin in μg/ml is
19. The root-knot nematode generally have interaction with
20. Calcium, magnesium and sulphur are defined as
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