R4RIN – MCQs, Mock Tests | Botany Botany MCQS[NEET-2021 to 2022]-Plant Pathology

Pectinolytic enzymes of plant pathogens play a major role during pathogenesis in which diseases?

1. Wilts, damping-off and root/foot rots
2. Downy mildew
3. Powdery mildew
4. None

✅ Correct Answer: 1

Phycomycetes belong to which of the following?

1. Algae
2. Fungi
3. Yeast
4. Bacteria

✅ Correct Answer: 2

Which of the following disease caused by Phyllactinis?

1. Powdery mildew
2. Leaf spot
3. Downy mildew
4. Blight

✅ Correct Answer: 1

Phytophthera belongs to which family?

1. Peronophythoraceae
2. Pareonosporaceae
3. Pythiaceae
4. None

✅ Correct Answer: 3

With regard to nutrition Erysiphe is

1. Endoparasite
2. Predator
3. Ectoparasite
4. None

✅ Correct Answer: 3

Plant parasitic nematodes posses how many part oesophagus?

1. Four part oesophagus
2. Three part oesophagus
3. One part oesophagus
4. Two part oesophagus

✅ Correct Answer: 4

Which among the following Plant pathogenic viroids contains?

1. Externally seed-borne and soil-borne disease
2. Externally seed-borne disease
3. Air-brone disease
4. None

✅ Correct Answer: 2

(With Phase) is common in which ?

1. Bacteria blight of Paddy
2. Blast of Paddy
3. White rust of Crucifers
4. Red rot of Sugarcane

✅ Correct Answer: 1

Which among the following caused Powdery mildew disease?

1. Bacterium
2. Fungus
3. Yeast
4. None

✅ Correct Answer: 2

Which of the following is belong to the family of Powdery mildew fungi?

1. Hypocereaceae
2. Hypomycetaceae
3. Erysiphaceae
4. None

✅ Correct Answer: 3

Once the pathogen has established in an area, steps taken to remove or destroy is known as?

1. Exclusion
2. Protection
3. Eradication
4. Management

✅ Correct Answer: 3

Oil from American elm seed contains 55 per cent capric acid toxic to Ceratocystis uimi the pathogen causing the famous _____ disease

1. Dutch elm
2. English elm
3. French elm
4. American elm

✅ Correct Answer: 1

Nematodes are also called as?

1. Earthworms
2. Tapeworms
3. Trematodes
4. None

✅ Correct Answer: 2

Nematode genus Hoplolaimus Daday was first recorded in _____ from an island in the Paraguay river

1. 1905
2. 1910
3. 1915
4. 1920

✅ Correct Answer: 1

Plant overgrowth due to increase in size of cell of the which of the following tissue ?

1. Hypertrophy
2. Hypoplasia
3. Hyperplasia
4. None

✅ Correct Answer: 1

Mycoplasma is sensitive to which of the following ?

1. Tetracycline
2. Pencillin
3. Steptomycin
4. Bavistin

✅ Correct Answer: 1

Mycoplasma disease of plant was first reported by which of the following ?

1. Anton de Barry
2. Brefeld
3. Doi et al. and Ishire et al.
4. Butler

✅ Correct Answer: 3

Mycology is the study of?

1. Bacteria
2. Fungi
3. Algae
4. Virus

✅ Correct Answer: 2

Most of the plant parasitic nematodes belong to which order?

1. Dorylaimida
2. Aphelenchida
3. Rhabditida
4. Tylenchida

✅ Correct Answer: 4

Meloidogyne belongs to which group?

1. Semi-ectoparasite
2. Semi-endoparasite
3. Ecotoparasite
4. Endoparasite

✅ Correct Answer: 4

Loose smut of wheat is a disease called as?

1. Internally seed borne
2. Air borne
3. Externally seed borne
4. None

✅ Correct Answer: 1

Loose smut of wheat can be effectively controlled by

1. Seed treatment with systemic fungicides
2. Crop rotation
3. Soil treatment with non-systematic fungicides
4. Spraying the crop with fungicides

✅ Correct Answer: 1

Acervuli is _____ shaped

1. Round
2. Oblate
3. Saucer
4. Conical

✅ Correct Answer: 3

Linseed rust is caused by ?

1. Melampsora lini
2. Uromyces
3. Physaqmidium
4. Ravenelia

✅ Correct Answer: 1

Micro organisms were first observed by?

1. L.J. Thernard
2. John Tyndall
3. Antony Van Leeuwenhock
4. None

✅ Correct Answer: 3

Microbiology is the science of which we study?

1. Viruses
2. Fungi
3. Bacteria
4. All

✅ Correct Answer: 4

Modification of floral parts into leafy structures by pathogenic infection called?

1. Hypertrophy
2. Hyperplasia
3. Phyllody
4. Witchs broom

✅ Correct Answer: 3

Yellow ear rot of wheat is caused by?

1. Corynebacterum
2. Anguina
3. A and B
4. None

✅ Correct Answer: 3

Most effective fungicide against powdery mildew disease?

1. Captan
2. Dithane
3. Karathane
4. None

✅ Correct Answer: 3

Irish famine was caused due to

1. Wheat rust
2. Apple scab
3. Late blight of potato
4. Tomato wilt

✅ Correct Answer: 3

Late blight of potato is caused by

1. Phytophthora infestans
2. Alternaria solani
3. Xanthomonas campestris pv. Citrii
4. Sychytriu endobioticum

✅ Correct Answer: 1

Leaf roll of potato is caused by

1. Virus
2. Fungus
3. Bacterium
4. Mycoplasm

✅ Correct Answer: 1

Leaf roll of potato is transmitted by?

1. M. persicae
2. M. pseudosolani
3. M. circumflexum
4. All

✅ Correct Answer: 4

Levillula is a

1. Endoparasitic
2. Ectoparasitic
3. A and B
4. None

✅ Correct Answer: 1

Lichen is an association between?

1. Fungus and Virus
2. Algae and Fungus
3. Bacterium and Fungus
4. Fungus and Nematode

✅ Correct Answer: 2

Yellow pigment in the culture is produced by?

1. Erwinia
2. Pseudomonas
3. Xanthomononas
4. Agrobacterium

✅ Correct Answer: 3

Anthracnose of Grape is also known as?

1. Birds-eye disease
2. Black spot
3. Buck eye rot
4. more than one option is correct

✅ Correct Answer: 4

In which rust pustules are arranged in end-to-end manner and forming strip?

1. Orange rust
2. Yellow rust
3. Black rust
4. White rust

✅ Correct Answer: 2

Choose the wrong combination?

1. Ziram = Cuman
2. Esso fungicide = Copper oxychloride
3. Thiram = Hexathir
4. Zineb = Kitazin

✅ Correct Answer: 4

Fusarium belong to which order?

1. Moniliales
2. Melaconiales
3. Sporobolomycetales
4. Cryptococcales

✅ Correct Answer: 1

Gelatin plate technique was discovered by?

1. Louis Pasteur
2. Burrill
3. Fanny Hesse
4. Robert Koch

✅ Correct Answer: 4

Genus Radopholus of nematode was first described in 1893 on the basis of a male specimen obtained from necrotic roots of _____ growing in Fiji Islands?

1. Sugarbeet
2. Sugarcane
3. Banana
4. Coconut

✅ Correct Answer: 3

Heterocious nature of rust means

1. A fungus require one host species to complete life cycle
2. A fungus require two different host species to complete life cycle
3. A and B
4. None

✅ Correct Answer: 1

Heterodera belongs to super family?

1. Tylenchoidea
2. Atylenchoidea
3. Neotylenchoidea
4. Heteroderoidea

✅ Correct Answer: 4

Wrong information about Powdery mildew is

1. Order = Erysiphales
2. Subdivision = Ascomycotina
3. Family = Melanconiaceae
4. None

✅ Correct Answer: 3

How much quantity of nematicide is used to control the nematodes in one hectare are?

1. 20-25 kg
2. 23-27 kg
3. 30-35 kg
4. None

✅ Correct Answer: 1

In bacterial brown rot and wilt of potato the amount of _____ produced by pathogens are proportional to severity of symptoms

1. Lipids
2. Gibberellins
3. Proteins
4. Polysncchnride

✅ Correct Answer: 4

In fermentation industry, pasteurization is done at _____ temperature

1. 100.0 C
2. 62.8 C
3. 80.0 C
4. 90.0 C

✅ Correct Answer: 2

Dry root rot of legumes and beans is caused by?

1. Macrophomina
2. Erysiphe
3. Xanthomonas
4. None

✅ Correct Answer: 1

Exclusion of plant disease by legislation is known as

1. Plant quarantine
2. Disease resistance
3. Biological control of plant
4. None

✅ Correct Answer: 1

Botany MCQ Quiz Hub

Botany MCQS[NEET-2021 to 2022]-Plant Pathology - II