The economic injury level for white fly is________________?
A. 1-2 nymphs/leaf B. 2-3 nymphs/leaf C. 3-4 nymphs/leaf D. 1 nymphs/leaf
Plant Pathology MCQs with Answers
The entrance point for air in insects are known as _________________?
A. Trachea B. Spines C. Secretion D. Nervous system
Pathogen is_________________?
A. Fungi which cause disease B. Any bacteria which causes disease C. Any virus which causes disease D. Any organism which causes disease
Root knot disease is caused by___________________?
A. Fungi B. Nematodes C. Virus D. Bacteria
Fungi damage our crops by_________________?
A. Producing toxic substances in plants B. Destroying green pigment of plant C. feeding on flowers and fruits D. Absorption of nutrients from plant tissues
Which one of the following is disease of wheat_________________?
A. Leaf rust B. Strip rust C. Loose rust D. All the above
The whole body of fungus is known as________________?
A. Thallus B. Hyphae C. Mycellium D. Septale Updated by: Dr. Jamil Shafi
A plant virus must have: __________?
A. RNAB. DNAC. Either DNA or RNAD. Both RNA and DNA