The plant disease caused by an algae is:
A) Blue mold of tobacco
B) Red rust of tea
C) Aster yellows
D) None of the above
Tomato leaf curl is caused by:
A) Bacteria
B) Fungi
C) Mycoplasma
D) Virus
Ufra disease of rice is caused by:
A) Pratylenchus
B) Ditylenchus
C) Aphelenchoides
D) Heterodera
Which fungus produces aflatoxin?
A) Penicillium notatum
B) Aspergillus flavus
C) Albugo candida
D) Trichoderma viride
Which of the following nematicides is a carbamate?
A) DBCP
B) DD
C) Phorate
D) Aldicarb
Which one of the following is the cause of spreading decline of citrus?
A) Citrus nematode
B) Burrowing nematode
C) Fungal diseases
D) Nutritional deficiency
Which one of the following sprayers requires the lowest volume of spray solution to cover a hectare of rice crop?
A) Power sprayer
B) Foot sprayer
C) Knapsack sprayer
D) Hand sprayer
Which one of the following tissues is most suitable for tissue culture to produce virus-free plants of potato?
A) Leaf tissue
B) Pollen
C) Embryo tissue
D) Meristem tip tissue

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