Biology

Microbes and Plant Diseases

1,118 Questions

Microbes and plant diseases examine the role of fungi, bacteria, and viruses in causing infections in plants and humans. Topics cover symbiotic associations like mycorrhiza, fungal structures, and specific agricultural pathogens. Practice these biology questions to master microbiology concepts for upcoming competitive examinations.

Fungal associationsPlant pathogensMicrobial structuresBacterial infections

Microbes and Plant Diseases Questions

Multiple choice

Which of the following fungi is NOT commonly used in mycoremediation?

  1. White rot fungi

  2. Brown rot fungi

  3. Black mold

  4. Yeast
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Black mold is not commonly used in mycoremediation, as it is not as effective at breaking down contaminants as white rot fungi, brown rot fungi, and yeast.

Multiple choice

Which of the following is a non-infectious disease that affects the digestive system of animals?

  1. Foot-and-mouth disease

  2. Bovine spongiform encephalopathy

  3. Mastitis

  4. Intestinal impaction
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Intestinal impaction is a non-infectious condition in animals where the digestive tract becomes blocked with undigested food, causing symptoms such as abdominal pain, constipation, and vomiting.

Multiple choice

What is the primary mode of transmission for Dutch elm disease?

  1. Bark beetles

  2. Aphids

  3. Fungi

  4. Wind
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Dutch elm disease is primarily transmitted by bark beetles, which carry the fungus that causes the disease.

Multiple choice

What is the primary mode of transmission for white pine blister rust?

  1. Wind

  2. Birds

  3. Animals

  4. Fungi
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

White pine blister rust is primarily transmitted by fungi, which are carried by wind or animals.

Multiple choice

What is the primary mode of transmission for sudden oak death?

  1. Wind

  2. Birds

  3. Animals

  4. Fungi
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Sudden oak death is primarily transmitted by fungi, which are carried by wind or animals.

Multiple choice

What is the term for the symbiotic relationship between certain fungi and plant roots?

  1. Mycorrhizae

  2. Rhizobia

  3. Actinomycetes

  4. Cyanobacteria
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Mycorrhizae are symbiotic associations between certain fungi and plant roots, where the fungus helps the plant absorb nutrients from the soil in exchange for carbohydrates.

Multiple choice

Which of the following is NOT a common type of plant disease?

  1. Powdery mildew

  2. Black spot

  3. Rust

  4. Chlorosis
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Chlorosis is not a common type of plant disease, as it is caused by a lack of chlorophyll, which is essential for photosynthesis.

Multiple choice

Which of the following is NOT a common type of fungus used in mycoremediation?

  1. White-rot fungi

  2. Brown-rot fungi

  3. Aspergillus niger

  4. Trichoderma harzianum
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Aspergillus niger is a common fungus used in ex-situ bioremediation, not in-situ bioremediation. White-rot fungi, brown-rot fungi, and Trichoderma harzianum are all common types of fungi used in mycoremediation.

Multiple choice

Which of the following is an example of a fungus used in mycoremediation?

  1. Aspergillus niger

  2. Trichoderma reesei

  3. Penicillium chrysogenum

  4. Saccharomyces cerevisiae
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Aspergillus niger is a fungus that is commonly used in mycoremediation. It is known for its ability to degrade a wide range of pollutants, including pesticides, dyes, and heavy metals.

Multiple choice

Which of the following is NOT a common type of fungus used in bioremediation of heavy metals?

  1. Aspergillus

  2. Penicillium

  3. Trichoderma

  4. Saccharomyces
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Saccharomyces is a type of yeast, not a fungus, and is not typically used in bioremediation of heavy metals.

Multiple choice

Which of the following is NOT a common type of fungus used in bioremediation of heavy metals?

  1. Aspergillus

  2. Penicillium

  3. Trichoderma

  4. Saccharomyces
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Saccharomyces is a type of yeast, not a fungus, and is not typically used in bioremediation of heavy metals.

Multiple choice

Which of the following is NOT a type of fungus?

  1. Yeast

  2. Mold

  3. Mushroom

  4. Bacteria
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Bacteria are not fungi because they are prokaryotic organisms.

Multiple choice

Which of the following is NOT a type of microbial infection?

  1. Bacterial infection

  2. Viral infection

  3. Fungal infection

  4. Parasitic infection
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Parasitic infections are caused by parasites, which are not microorganisms.

Multiple choice

What is the primary mechanism by which fungi contribute to the bioremediation of nanomaterials?

  1. Mycoremediation

  2. Phytoextraction

  3. Phytoreduction

  4. Phytovolatilization
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Mycoremediation involves the use of fungi to degrade and remove nanomaterials from the environment.

Multiple choice

Which of the following is a common type of biological growth that can damage mosaics?

  1. Algae

  2. Fungi

  3. Lichen

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Algae, fungi, and lichen are all common types of biological growth that can damage mosaics.