C:-Carbaryl
D:-Quinalphos
Correct Answer:- Option-A

Question45:-With regard to plant disease transmission by insect vectors, which of
the following terms are applicable

(1) Accidental association

(ii) Casual association

(iii) Obligatory association

(1५) Intimate association

(v) Symbiotic association

A:-Only (i), (ii) and (v)

B:-Only (i), (iii) and (v)

C:-Only (i), (iv) and (v)

D:-All the above (i, ii, iii, iv and v)
Correct Answer:- Option-D

Question46:-India has witnessed insect pest invasions of

(1) Erythrina gall wasp , coffee berry borer and Coconut Eriophyid mite
(ii) Papaya mealy bug, Cassava mealybug and Rugose spiralling white fly
(iii) Rugose spiralling whitefly, Rice stem borer and Rhinoceros beetle
(iv) Coconut root grub, Rhinoceros beetle and Rugose spiralling whitefly
(v) Lotus lilly midge, Eucalyptus gall wasp and Cassava mealybug

A:-Only (i), (iii) and (V)
B:-Only (i), (ii) and (iii)
C:-Only (i), (ii) and (V)
D:-Only (ii), (iv) and (V)
Correct Answer:- Option-C

Question47:-The casual organism of brown spot of rice that caused the Great
Bengal Famine is

A:-Dreschslera Oryzae
B:-Helminthosporium Oryzae
C:-Sarocladium oryzae
D:-Pyricularia oryzae
Correct Answer:-Question Cancelled
Question48:-Virulence of a pathogen may be stated as
A:-Genetic capability to cause disease
B:-Genetic ability to overcome host resistance
C:- Genetic ability to tolerate the pathogen and its activities
D:-Genetic ability to reproduce and maintain the parasitic life
Correct Answer:- Option-A

Question49:-Black rot of cabbage is caused by