Which disease is spread by:

(a) female Anopheles mosquito?

(b female Aedes mosquito?

Describe the method of pasteurization for the preservation of milk.

Name one plant disease each caused:

(a) by fungi

(b) by virus

(c) by bacteria

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)