Biology

Microbes and Plant Diseases

1,145 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 is a common disease of barley?

  1. Barley stem rust

  2. Barley leaf rust

  3. Barley stripe rust

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

Barley stem rust, barley leaf rust, and barley stripe rust are all common diseases of barley.

Multiple choice

What is the role of fungi in the bioremediation of petroleum hydrocarbons?

  1. They can degrade a wide range of hydrocarbons

  2. They produce enzymes that break down hydrocarbons

  3. They can tolerate extreme environmental conditions

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

Fungi play a significant role in the bioremediation of petroleum hydrocarbons. They can degrade a wide range of hydrocarbons, produce enzymes that break down hydrocarbons, and tolerate extreme environmental conditions. This makes them valuable agents for the bioremediation of contaminated sites.

Multiple choice

Which of the following is a common cause of thrush in infants?

  1. Candida albicans

  2. Streptococcus mutans

  3. Lactobacillus acidophilus

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

Thrush in infants is commonly caused by the fungus Candida albicans.

Multiple choice

In the 2023 series (The Last of Us), what is the name of the fungal infection that turns people into aggressive, zombie-like creatures?

  1. The Cordyceps Brain Infection

  2. The Zombie Virus

  3. The Green Flu

  4. The Rage Virus
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Cordyceps Brain Infection is the cause of the zombie-like creatures in The Last of Us.

Multiple choice

Mycorrhizae are a type of symbiotic relationship between fungi and plants. True or False?

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Mycorrhizae are a type of mutualistic symbiosis between fungi and plants, where the fungus helps the plant absorb water and nutrients from the soil, while the plant provides the fungus with carbohydrates.

Multiple choice

Which of the following is a common type of disease that affects local agriculture?

  1. Bacterial wilt

  2. Fungal blight

  3. Viral mosaic

  4. Nematode infestation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Fungal blights are caused by fungi that attack the leaves, stems, or fruits of plants. They can cause significant damage to crops by reducing plant growth and yield.

Multiple choice

What is the causative agent of ringworm?

  1. Bacteria

  2. Virus

  3. Fungus

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

Ringworm, also known as tinea, is a fungal infection of the skin. It is caused by a group of fungi called dermatophytes, which thrive on keratin, a protein found in the skin, hair, and nails.

Multiple choice

Athlete's foot is a fungal infection that commonly affects the:

  1. Hands

  2. Scalp

  3. Feet

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

Athlete's foot, also known as tinea pedis, is a fungal infection that affects the skin of the feet. It is caused by dermatophytes, which thrive in warm, moist environments, such as the inside of shoes.

Multiple choice

Which skin infection is caused by the fungus Candida albicans?

  1. Impetigo

  2. Ringworm

  3. Scabies

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

Candidiasis is a fungal infection caused by the yeast Candida albicans. It can affect the skin, mouth, vagina, and other parts of the body.

Multiple choice

What is the primary causative agent of erysipelas?

  1. Bacteria

  2. Virus

  3. Fungus

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

Erysipelas is a bacterial infection of the superficial layers of the skin and underlying tissues. It is commonly caused by bacteria such as Streptococcus pyogenes and Staphylococcus aureus.

Multiple choice

What is the scientific name of the Indian slime mold commonly known as the 'flower of tan'?

  1. Physarum polycephalum

  2. Fuligo septica

  3. Stemonitis fusca

  4. Dictyostelium discoideum
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Fuligo septica is a plasmodial slime mold that is commonly found in forests and grasslands in India. It is characterized by its bright yellow or orange color and its ability to form large, fan-shaped structures.

Multiple choice

Which Indian slime mold is known for its ability to solve mazes?

  1. Physarum polycephalum

  2. Dictyostelium discoideum

  3. Stemonitis fusca

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

Physarum polycephalum is a slime mold that has been shown to be able to solve mazes and other complex problems. It does this by sending out exploratory tendrils that grow and branch until they find the solution to the problem.

Multiple choice

Which Indian slime mold is commonly found on decaying wood?

  1. Physarum polycephalum

  2. Fuligo septica

  3. Stemonitis fusca

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

Stemonitis fusca is a slime mold that is commonly found on decaying wood in India. It is characterized by its dark brown or black color and its tall, slender fruiting bodies.

Multiple choice

What is the largest slime mold in India?

  1. Physarum polycephalum

  2. Fuligo septica

  3. Stemonitis fusca

  4. Lycogala epidendrum
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Fuligo septica is the largest slime mold in India. It can grow to be several meters in diameter and can weigh up to several kilograms.

Multiple choice

Which Indian slime mold is known for its ability to glow in the dark?

  1. Physarum polycephalum

  2. Fuligo septica

  3. Stemonitis fusca

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

Lycogala epidendrum is a slime mold that is known for its ability to glow in the dark. This is due to the presence of a chemical called luciferin, which is oxidized to produce light.