Question:

In plants, mosaic formation, leaf rolling and curling, yellowing of plant parts, vein clearing, dwarfing and stunted growth, necrosis etc. are the symptoms of

Updated On: Jul 6, 2022
  • bacterial diseases
  • mycoplasmal diseases
  • viral diseases
  • fungal diseases
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The Correct Option is C

Solution and Explanation

In plants, viruses cause diseases like potato mosaic, pumpkin mosaic, apple mosaic, tulip mosaic (broken tulip), bhindi yellow vein mosaic, potato leaf roll, papaya leaf curl, banana bunchy top, tomato bunchy, rice tungro, etc.
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Concepts Used:

Biological Classification

The process of grouping living organisms into categories is called biological classification. The most modern 5-kingdom classification was put ahead by an eminent scientist R.H.Whittaker. The five-kingdom classification is based on the criteria like cell structure, mode of nutrition, body form, and reproduction. One of the most important characteristics of this system is that it follows the evolutionary sequence of living organisms. The organisms are classified into distinct taxa or levels like Kingdom, Phylum, Division, Class, Order, Family, Genus, and Species. The 5 kingdoms are as follows:

Biological Classification