Kresek in rice is a characterics feature of
A. BLB
B. BLS
C. Brown spot
D. Blast
Answer: Option A
Solution(By Examveda Team)
Kresek in rice is a characterics feature of BLB.In seedlings, the leaves dry out and wilt, a syndrome known as kresek. Infected seedlings usually are killed by bacterial blight within two to three weeks of being infected; adult plants may survive, though rice yield and quality are diminished.
BLB is Bacterial leaf blight disease, occurs at different growth stages of rice and is manifested by either leaf blight or Kresek symptoms. The water-soaked lessions enlarge in size, turn yellow, and ultimately lead to the death of the plant.
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Which photosynthetic bacteria possess both PS I and PS II?
A. Purple sulphur bacteria
B. Cyanobacteria
C. Purple nonsulphur bacteria
D. Green sulphur bacteria
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