Plant Pathology MCQs-29

Plant Pathology MCQs-29
Multiple Choice Questions (MCQs)
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1. Mutation in pathogen populations contributes to __________________

 Reduced genetic diversity

 Emergence of new virulent strains

 Elimination of pathogens

 Increased host resistance

2. In plant pathology, infection refers to _________

 Presence of spores on leaves

 Presence of pathogens on plant surfaces

 Establishment and colonization of host tissues by a pathogen

 Mechanical injury to plants

3. Climate change may increase plant disease outbreaks primarily because __________

 Warmer and humid conditions favor pathogen growth and spread

 Plant resistance increases

 Higher CO₂ always suppresses pathogens

 Pathogens disappear in warmer climates

4. One of the most widely used fungal biocontrol agents is _________________________

 Trichoderma harzianum

 Claviceps purpurea

 Puccinia graminis

 Fusarium oxysporum

5. _________ was the first scientist who proved that potato late blight is caused by a fungus

 Anton de Bary

 Mendel

 Louis Pasteur

 Robert Koch

6. The most common organisms referred to as superbugs are ________

 Fungi

 Bacteria

 Viruses

 Protozoa

7. Obligate parasites can survive without a living host

 False

 True

8. Recombination in fungal pathogens occurs mainly through ____________

 Mitosis only

 Sexual reproduction

 Binary fission

 Vegetative growth only

9. The gelatinous matrix surrounding root-knot nematode eggs is secreted by _________

 Rectal glands

 Esophageal glands

 Vulval glands

 Hypodermal glands

10. The symbiotic association between Frankia and host plants results in the formation of specialized root nodules called _____________

 Mycorrhizae

 Root galls

 Haustoria

 Actinorhizae

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Plant Pathology MCQs-29

Plant Pathology MCQs

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[Test 5]	[Test 6]	[Test 7]	[Test 8]
[Test 9]	[Test 10]	[Test 11]	[Test 12]

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[Test 13]	[Test 14]	[Test 15]	[Test 16]
[Test 17]	[Test 18]	[Test 19]	[Test 20]
[Test 21]	[Test 22]	[Test 23]	[Test 24]

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[Test 25]	[Test 26]	[Test 27]	[Test 28]
[Test 29]	[Test 30]

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