11. Bird guano contains
12. The organo-mercurials fungicides used for dry seed treatment usually contain mercury
13. Select the wrong pair
14. Which of the following is a non-metalic nutrient?
15. The pigment present universally in all green oxygenic plants is
16. Cell wall of oomycetes is composed of
17. Development of egg/gamete into embryo without fertilisation
18. The science which deals with cause of the plant diseases and nature of causal agent
19. The two pigment system theory of photosynthesis was proposed by
20. EPIDEMIC is the simulation model of which disease?
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