TREE DISEASES AND PESTS
COMMON TREE DISEASES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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They reduce the area for photosynthesis.
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They destroy cells.
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They act as a vector, transferring viruses, bacteria and fungi between the plants.
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They prevent plants from acquiring the water and minerals it needs.
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Detailed explanation-1: -Tobacco mosaic virus enters plant cells only through mechanical wounds which either transiently open the plasma membrane or allow pinocytosis (Palukaitis and Zaitlin, 1986; Shaw, 1999; Figure 1).
Detailed explanation-2: -The tobacco mosaic virus attacks plants in the families that include tomato, pepper, eggplant, tobacco, spinach, petunia, and marigold. Many modern vegetable varieties have been developed to resist this virus.
Detailed explanation-3: -TMV affects plant photosynthesis. Tobacco mosaic virus (TMV) is a plant pathogen that affects tobacco and other tobacco like plants, such as cucumbers. It works by infecting chloroplasts, which changes the colour of the plant from green to yellow. This stops the plant from photosynthesising properly.