Agriculture - Mock Test 224

Question 2231

Leaf curl of tobacco is caused by?

A) Nicotina virus Ca-i B) Nicotina virus-10 C) MLO's D) Viriod

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Question 2232

Ufra disease of rice is caused by?

A) Pratylenchus B) Ditylenchus C) Aphelenchoides D) Heterodera

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Question 2233

Tundu disease of what is caused by?

A) Anguina B) Corynebacterium C) Both 1⃣ & 2⃣ D) Heterodera

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Question 2234

Transduction is a process of multiplication in?

A) Fungi B) Bacteria C) Bacteriophages D) Nematode

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Question 2235

Tomato leaf curl is caused by?

A) Bacteria B) Fungi C) Mycoplasma D) Virus

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Question 2236

Tobacco mosaic virus was first reported by?

A) Smith B) Martin C) Mayer D) Beijerinck

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Question 2237

Choose the odd one?

A) Leafspot = Paddy, Pigeonpea B) Zonate leaf spot = Jawar C) Red leaf = Sugarcane D) Leaf blight = Wheat

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Question 2238

To which group Dithane Z-78 belongs?

A) Organomercurial B) Dithiocarbomic acid C) Heterocyclic nitrogen compound D) None of these

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Question 2239

Tilletia causes the disease?

A) Rust B) Smut C) Bunt D) Karnal Bunt

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Question 2240

The plant mycoplasmal diseases are transmitted by?

A) Aphids B) Leaf hoppers C) Mites D) Above all

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