(A) Cotton boll rot virus (X)
(B) Cotton stem crinkle virus (X)
(C) Cotton leaf curl virus ()
(D) None of the above (X)

Answers: The major viral disease of cotton is Cotton leaf curl virus.

(A) Lady bird beetle (X)
(B) Silk worm ()
(C) Honey bee (X)
(D) None of the above (X)

Answers: Bombyx morri is the name of Silk worm.

(A) Microtermas sp (X)
(B) Aphis gossypi (X)
(C) Earias insulana (X)
(D) Amrosca devestons ()

Answers: The technical name of jassid is Amrosca devestons.

(A) Pathology (X)
(B) Fungicology (X)
(C) Mycology ()
(D) Genetics (X)

Answers: The study of fungi is called Mycology.

(A) Blight (X)
(B) Downy mildew (X)
(C) Powdery mildew ()
(D) None (X)

Answers: The major disease of matter (field pea) is Powdery mildew.

A. Pemospora Parasitica (X)
B. Alternarian solani (X)
C. Albugo candida ()
D. Aspergillus niger (X)

Answers: White rust of crucifers is caused by Albugo candida.