Understanding Plant Diseases Classifications
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Questions and Answers

What is the main difference between non-infectious and infectious plant diseases?

  • Non-infectious diseases can spread from one susceptible host to another, while infectious diseases are caused by unfavorable growth conditions.
  • Non-infectious diseases are caused by environmental factors, while infectious diseases can spread from one susceptible host to another.
  • Non-infectious diseases are caused by bacteria and viruses, while infectious diseases are caused by environmental factors.
  • Non-infectious diseases are caused by unfavorable growth conditions, while infectious diseases can spread from one susceptible host to another. (correct)

What causes wilting in plants?

  • Loss of turgor pressure in the cells and tissues (correct)
  • Overexposure to sunlight
  • Presence of mold in the soil
  • Excessive water intake by the plant roots

Which factor is associated with spotting in plant tissues?

  • Abiotic factors
  • Excessive water intake by the plant roots
  • Lack of nutrients in the soil
  • Biotic factors (correct)

What is a possible cause of deformations in plants?

<p>Biotic and abiotic factors (B)</p> Signup and view all the answers

What causes mummification of plant organs?

<p>Fungal mycelium (D)</p> Signup and view all the answers

What are the natural reservoirs of infectious agents for plant diseases?

<p>Soil, water, and animals (D)</p> Signup and view all the answers

Which of the following primarily cause infectious plant diseases?

<p>Fungi, bacteria, viruses, protozoa, insects, and parasitic plants (B)</p> Signup and view all the answers

What has increased the susceptibility of monocultures to infectious plant diseases?

<p>Modern agricultural practices (A)</p> Signup and view all the answers

Why is it necessary to address infectious diseases at all stages of crop production?

<p>To prevent losses and ensure healthy plant growth (D)</p> Signup and view all the answers

What determines the two classifications of plant diseases?

<p>The nature of the causative agent (B)</p> Signup and view all the answers

How are non-infectious diseases caused, and what distinguishes them from infectious diseases?

<p>Non-infectious diseases are caused by environmental factors, while infectious diseases are caused by pathogens. (A)</p> Signup and view all the answers

What causes wilting in plants, and what distinguishes the occurrence of spotting in plant tissues?

<p>Wilting is caused by underwatering, while spotting is due to overwatering. (D)</p> Signup and view all the answers

How are deformations in plants caused according to the text, and what factors contribute to mummification of plant organs?

<p>Deformations are caused by environmental factors, and mummification occurs due to excess humidity. (D)</p> Signup and view all the answers

What are the natural reservoirs of infectious agents, and how can these agents spread?

<p>Natural reservoirs are other infected plants and debris, and these agents spread through contact with farming equipment. (A)</p> Signup and view all the answers

Which organisms primarily cause infectious plant diseases according to the text?

<p>Viruses and bacteria (B)</p> Signup and view all the answers

Why is it necessary to address infectious diseases at all stages of crop production?

<p>To minimize economic losses and ensure food security (B)</p> Signup and view all the answers

What is the main purpose of the review mentioned in the text, and what does it aim to provide?

<p>To summarize current knowledge on plant diseases and offer insights for disease management (A)</p> Signup and view all the answers

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