Question:

Which of the following is not a viral disease of plants?

Updated On: Jul 7, 2022
  • Red rot of sugarcane
  • Tobacco mosaic disease
  • Leaf curl of tomato
  • Tristeza disease of citrus
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The Correct Option is A

Solution and Explanation

Fungus Colletotrichum falcatum produces red rot of sugarcane which is conspicuous on leaf midribs as well as in canes. It reduces juice content of canes and brings about withering of leaves.
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Notes on biological classification

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