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?