Name any two animal diseases and two plant diseases caused by micro-organisms.

Name two fruits which are preserved:

(a) in the form of pickles

(b) in the form of jams.

What is the mode of transmission of the following diseases?

(a) Rust of wheat

(b) Citrus canker

(c) Yellow vein mosaic of bhindi (Okra)

State the causative micro-organisms and modes of transmission of the following human diseases :

(i) Tuberculosis

(ii) Measles

(iii) Chickenpox

(iv) Polio

(v) Cholera

(vi) Typhoid

(vii) Hepatitis B

(viii) Malaria

(ix) Dengue

What is meant by communicable diseases? Name any two communicable diseases.