New Update Question Bank of Plant Pathology (206)

Question Bank of Plant Pathology (206).https://cststudy.blogspot.com/

Question Bank of Plant Pathology (206)

(1) Introduction to Plant Pathology:

(a) Define plant pathology. (10, 12)

(b) Define plant disease. (11, 12, 13, 14, 15)

(d) Describe in brief the history of plant disease with special reference in Bangladesh. (10, 15)

(e) Write down the classification of plant disease. (10, 11, 14)

(f) Define following terms;

(i) Pathogenicity. (10, 13)

(ii) Saprophyte. (10, 11, 13, 14)

(iii) Pathogenesis. (10, 11, 13, 14)

(iv) Secondary inoculum. (10, 13)

(v) Primary inoculum. (11, 14)

(vi) Cause and causal organism. (11)

(vii) Penetration. (11, 13, 14)

(viii) Infection. (11, 14)

(ix) Symbiosis. (11, 14)

(x) Resistant. (11, 13, 14)

(xi) Facultative parasite. (11, 14)

(xii) Obligate parasite. (11, 14)

(xiii) Symptom and sign. (15)

(g) Write down the different types of disease symptoms. (13, 15)

(h) Narrate the following disease symptoms; Blight, Canker, Anthracnose and Scab. (14)

(2) Introduction to Fungi:

(a) Define fungi. (13)

(b) What is fungus? Denote the characteristics of fungus. (14)

(d) Draw and label coenocytic and septae mycelium. (14)

(e) Write down the nutrition and reproduction of fungi. (13, 15)

(f) Write down the occurrence of Albugo candida. (10)

(g) Write down the occurrence and economic importance of Aspergillus. (12)

(h) Write down the occurrence, somatic structure and asexual reproduction of genus Pythium. (12)

(i) Give the occurrence of Rhizopus. (10)

(j) Differentiate between autocius and heterocius fungi. (15)

(k) Write down the somatic structure and laboratory culture of Rhizopus. (10)

(l) Give the symptoms and control measure of white rust of crucifers. (10)

(m) Write down the systematic positions of the following fungi, name a disease and relevant host for each of them.

(i) Synchytrium endobioticum. (10, 11, 12, 14)

(ii) Penicillium notatum. (10, 13)

(iii) Pythium deboryanum. (10, 13)

(iv) Albugo candida. (11, 12, 13, 14)

(v) Aspergillus niger. (12, 13)

(vi) Rhizopus stolonifer. (12, 14)

(vii) Puccinia graminis tritici. (15)

(viii) Bipolaris oryzae. (15)

(ix) Ustilago tritici. (15)

(n) Illustrate the different types of modification of fungal mycelium. (15)

(o) What do you mean by parasexuality in fungi? (14)

(p) Write down the steps of parasexuality cycle in chronological order. (14)

(q) Write down the asexual reproduction of genus Rhizopus. (10, 13)

(r) Write down the asexual reproduction of genus Penicillium with labelled diagram. (12)

(s) Describe the occurrence, reproduction and the name of diseases causes by Alternaria and Cerospora. (10)

(t) Draw and label the conidia and conidiophores of Aspergilllus, Penicillium and Phytophora. (10)

(u) What is fungi imperfecti? (10)

(v) Why deuteromycotina is called fungi imperfecti? Explain it.

(w) Write favourable conditions of late blight disease. (11)

(k) Give the symptoms and control measure of potato late blight with causal organism. (11)

(x) What do you mean by haustoria? (11, 14)

(y) Give a ultra structure of haustoria apparatus with labelled diagram. (11, 13, 14)

(z) Describe the symptoms of damping off disease with causal organism. (11, 13)

(a) Describe the symptoms of damping off disease with causal organism give the favourable conditions and control measures of the same. (12)

(b) Name different diseases caused by Pythium mentioning their control measures. (11, 13)

(d) Write the economic importance of Penicillium. (14)

(e) Write with labelled diagram the conidia and conidiophores of the following genera; (i) Alternaria, (ii) Cerospora, (iii) Fusarium, (iv) Colletotrichum. (11)

(f) Distinguish between homothallic and heterothallic fungi. (11)

(g) Denote the similarities and dissimilarities between rust and smut fungi. (11)

(h) Name the different reproductive stages and respective spores of Puccinia gramiris tritici in chronological order. (11)

(i) Write down the difference between Aspergillus and Penicillium. (11)

(j) Write down the characteristics of fungi including morphology. (12)

(k) Explain the reproduction of fungi. (12)

(l) Give the classification of fungi. (12)

(m) What is cosmopolitan fungus? (12)

(n) Discuss cuscuta and loranthus. (12)

(o) Write about Puccinia, Aspergillus, Erysiphe and Ustilgo. (12)

(p) Briefly describe the fruiting body of Agaricus with labelled diagram. (13)

(q) Distinguish between spore and conidia. (15)

(r) Narrate the fruiting body in fungi. (15)

(s) Write the characteristics of Hypomycetes. (15)

(t) Distinguish between rust and smut. (15)

(u) Describe the life cycle of (i) Phytophthora infestans, (ii) Pythium. (15)

(v) Give a list of diseases caused by fungi. (15)

(w) Write down the characteristics of class Oomycetes. (15)

(3) Introduction to Bacteria:

(a) Draw and label a bacteria cell. (10)

(b) Write down the characteristics of plant pathogenic bacteria. (10, 13, 14)

(d) Write down the characters plant pathogenic bacteria. (11)

(e) Give the morphology and types of bacteria. (15)

(f) Distinguish between gram +ve and gram -ve bacteria. (11)

(g) Give a brief account of nutrition of bacteria. (11, 13)

(h) Write the nutrition and economic importance of bacteria. (15)

(i) State the infection process of bacteria. (12)

(j) Describe the symptoms of bacterial diseases with examples. (12)

(k) Give a brief account of reproduction of bacteria. (14)

(l) Narrate the nutrition and some disease symptoms caused by bacteria. (14)

(m) Give a classification of plant pathogenic bacteria. (14)

(n) Name bacterial disease for each of the following crops mentioning the causal agent; (i) Rice, (ii) Cotton, (iii) Cabbage and (iv) Potato. (14)

(o) Write in brief the importance of bacteria in agriculture. (14)

(p) Give some diseases caused by bacteria. (15)

(q) Narrate the control measures of bacterial diseases. (15)

(4) Introduction to Plant Viruses and Microplasm:

(a) Define virus (13), viroides and microplasma. (11, 14)

(b) Describe the transmission mechanism of plant viruses by insects. (11, 13, 14, 15)

(d) Name the different methods of identification of plant viruses. (11)

(e) Describe the transmission of plant viruses. (12)

(f) Describe the physical and chemical structures of viruses. (12)

(g) Write down the symptoms of disease caused by virus. (13)

(h) Why plant virus is different from other disease causing agents? (14)

(i) Write the characteristics of plant viruses. (15)

(j) Describe the infection process and translocation of viruses. (15)

(5) Introduction to Plant Parasitic Nematodes:

(a) Define nematode. (13)

(b) Define plant nematology. (11, 14)

(d) How plant parasitic nematode takes food? (11, 13)

(e) Describe 3 above ground and 4 under ground symptoms caused by plant parasitic nematode with examples. (11, 14)

(f) Define plant parasitic nematodes. (12, 15, 15)

(g) Classify plant parasitic nematodes. (12, 13)

(h) Describe the reproduction process of nematodes. (12, 14)

(i) Briefly describe the symptoms caused by plant parasitic nematodes. (13)

(j) Discuss the feeding mechanism of plant parasitic nematode. (15)

Short notes: (a) Curvularia. (10)

(b) Hypertrophy and Atrophy. (15)

(d) Importance of yeast fungi. (15)

(e) Agaricus. (14)

(f) Mycoplasma. (12)

(g) Nutrition of fungi. (11, 10)

(h) Parasitism and Facultatism. (10)

(i) Morphology of nematode. (14, 13, 12)

(j) Physical structures of virus. (13)

(k) Symptoms of nemic diseases. (12)

(l) Genera of Deuteromycotina. (12)

(m) Homothallic and heterothallic fungi. (15)

(n) Classification of plant diseases. (15)

(o) Economic importance of Penicillium. (14, 13, 11)

(p) Asexual reproduction of Aspergillus. (14, 11)

(q) Role of enzymes and toxinin disease development. (10)

(r) Somatic structure of Rhizopus. (14, 11)

(s) Symptoms of white rust of crucifers. (14, 13)

(t) Cuscuta. (10)

(u) Macrophomina. (15)

(v) Loranthus. (14, 12, 11)

(w) Fruiting of Agaricus. (11)

(x) Serologist test. (13, 11)

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