describe the types of virus

1.	describe the types of virus
Answer» (a) Plant Viruses (Phytophagineae): They cause disease in plants, e.g., Tobacco Mosaic Virus (Fig. 2.2); Potato Mosaic Viruses, Banana Bunchy Top Virus, Tomato Leaf Curl Virus, (b) Animal Viruses (Zoophagineae, Fig. 2.3). They parasitize animals including human beings, e.g., Poliomyelitis Virus, Influenza Virus, Small Pox Virus, Hepatitis Virus, Mumps Virus, Rhino Viruses (common cold viruses), (c) Phagineae: They parasitise lower organisms— bacteriophages (bacterial viruses, e.g., T2, T4, lambda, Fig. 2.4), coliphages (bacteriophages of Escherichia coli), cyanophages (blue-green algal viruses, e.g., LPP-1, SM-1, N-l), phycophages (algal viruses), mycophages (fungal viruses), zymophages (mycophages of yeast).

Answer»

(a) Plant Viruses (Phytophagineae):

They cause disease in plants, e.g., Tobacco Mosaic Virus (Fig. 2.2); Potato Mosaic Viruses, Banana Bunchy Top Virus, Tomato Leaf Curl Virus,

(b) Animal Viruses (Zoophagineae, Fig. 2.3).

They parasitize animals including human beings, e.g., Poliomyelitis Virus, Influenza Virus, Small Pox Virus, Hepatitis Virus, Mumps Virus, Rhino Viruses (common cold viruses),

They parasitise lower organisms— bacteriophages (bacterial viruses, e.g., T2, T4, lambda, Fig. 2.4), coliphages (bacteriophages of Escherichia coli), cyanophages (blue-green algal viruses, e.g., LPP-1, SM-1, N-l), phycophages (algal viruses), mycophages (fungal viruses), zymophages (mycophages of yeast).

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