প্লান্ট প্যাথলজি

• ০০। "With Phase" is common in:
• ক) Blast of Paddy
• খ) Bacteria blight of Paddy
• গ) White rust of Crucifers
• ঘ) Red rot of Sugarcane

• ০১। A bacterium is devoid of:
• ক) Chlorophyl
• খ) Well defined nucleus
• গ) Cell wall
• ঘ) Both (a) & (b)

• ০২। A virus particle with both nucleic acid and protein coat is known as:
• ক) Virion
• খ) Viriod
• গ) Capsid
• ঘ) All above

• ০৩। Acervuli is _____ shaped:
• ক) Round
• খ) Saucer
• গ) Oblate
• ঘ) Conical

• ০৪। Agallol is used for:
• ক) Seed treatment
• খ) Soil treatment
• গ) Crop spray
• ঘ) Aerial spray

• ০৫। Agar-agar is produced from:
• ক) Nostoc
• খ) Macrocrocystis
• গ) Gelidium
• ঘ) Oscillatortia

• ০৬। Albugo is a:
• ক) Obligate parasite
• খ) Facultative parasite
• গ) Saprophyte
• ঘ) Predator

• ০৭। Alexander Fleming (1929) discovered:
• ক) Streptomycetease
• খ) Penicillin
• গ) Tyrocidine
• ঘ) Giseofulvin

• ০৮। Alternate host of black stem rust of wheat:
• ক) Mohania
• খ) Thalictrum
• গ) Barberry
• ঘ) All above

• ০৯। Anterior tinsel flagellum is characteristics of:
• ক) Chytridiomycetes
• খ) Hypochytridiomycetes
• গ) None of these
• ঘ) Both (a) & (b)

• ১০। Anthracnose of Grape is also known as:
• ক) Bird's-eye disease
• খ) Buck eye rot
• গ) Black spot
• ঘ) Both (a) & (c)

• ১১। Association of fungi with roots of higher plants is known as:
• ক) Lichen
• খ) Mycorrhiza
• গ) Ascolichen
• ঘ) Basidiolichen

• ১২। Bacilli are:
• ক) Spiral shaped
• খ) Spherical shaped
• গ) Rod shaped
• ঘ) None of the above

• ১৩। Bacterial cell surrounded by flagella is called:
• ক) Monotrichous
• খ) Lophotrichous
• গ) Amphitrichous
• ঘ) Peritrichous

• ১৪। Bacterial leaf blight of rice caused by Xanthomonaso ryzae can be identified by:
• ক) Wilting of the plant
• খ) Yellowing of leaves
• গ) Ooze test
• ঘ) Defoliation

• ১৫। Bengal famine was caused due to:
• ক) Phytophthora infestans
• খ) Drechslera oryzae
• গ) Puccinia graminis tritici
• ঘ) Heterodera avenage

• ১৬। Black heart of potato is caused due to deficiency of:
• ক) Boron
• খ) Zinc
• গ) Iron
• ঘ) Oxygen

• ১৭। Black stem rust of wheat caused by:
• ক) Puccinia graminis tritici
• খ) Puccinia recondita
• গ) Puccinia striformis
• ঘ) Ustilagotritici

• ১৮। Black tip of mango is caused by:
• ক) Phythium
• খ) Phytosynthetas
• গ) Boron deficiency
• ঘ) Zinc deficiency

• ১৯। Blast of rice is caused:
• ক) Xanthomonas
• খ) Drechslera oryzae
• গ) Pyricularia
• ঘ) Cercospora