Free Kingdom Fungi MCQs with Answers

61. Which of the following is not a parasitic fungus of plants?

• A. Rust
• B. Mildews
• C. Armillaria
• D. None of the given options

Explanation: All three options, rust, mildew, and Armillaria, are parasitic fungi of plants; hence, the correct answer is D) None of the given options.

62. The fungus which provides a chemotherapeutic agent that is used to inhibit fungal growth is called:

• A. Penicillium notatum
• B. Aspergillus
• C. Penicillium griseofulvum
• D. Claviceps purpurea

Explanation: An antifungal agent is a drug that selectively eliminates fungal pathogens. Griseofulvin is an antifungal antibiotic produced by Penicillium griseofulvin.

63. The most common example of members of the kingdom fungi is/are:

• A. Star fish
• B. Mushrooms
• C. Algae
• D. Human

Explanation: Mushrooms are part of the division "Basidiomycota" of the kingdom Fungi. Algae belong to the kingdom Protista; humans belong to the phylum Chordata of the kingdom Animalia; and starfish belong to the phylum Echinodermata of the kingdom Animalia, respectively.

64. Dark purple or black spore cases of Claviceps purpurea are called:

• A. Smuts
• B. Rusts
• C. Ergots
• D. Aspergers

Explanation: Claviceps purpurea is an ergot fungus that grows on the ears of rye and related cereal and forage plants. Consumption of grains or seeds contaminated with the survival structure of this fungus, the ergot sclerotium, can cause ergotism in humans and other mammals.

65. A plant disease which is not caused by a fungus is:

• A. Red rot of Sugarcane
• B. Late blight of Potato
• C. Black rot of crucifers
• D. Brown rust of wheat

Explanation: Red rot disease is caused by the fungus Glomerella tucumanensis. It produces a structure called acervuli. This results in profuse sporulation. Late blight of potatoes is caused by the fungus Phytophthora infestans. It infects and destroys the leaves, stems, fruits, and tubers of potato and tomato plants. The black rot of crucifers is caused by the bacterium Xanthomonas campestris. It results in dark brown discolouration of the leaves of fruits and vegetables. Wheat leaf rust is a disease caused by the fungus Puccinia triticina. It affects wheat, barley, and rye stems, leaves, and grains. Thus, the correct answer is 'Black rot of crucifers.'Although option B may seem correct, the question specifically asks about plant diseases not caused by fungi. Late blight of potato, mentioned in option B, is caused by a fungus-like protist. While it is not a true fungus, some textbooks classify it as a type of primitive fungus.

66. Asexual spores of fungi are called:

• A. Conidiospores
• B. Zygospores
• C. Ascospores
• D. Basidiospores

Explanation: The two most common types of asexual reproductive spores produced by molds are, conidiospores and sporangiospores. Conidiospores are borne externally in chains on an aerial hyphae called a conidiophore.

67. The Fungal Cell wall contains:

• A. Peptidoglycan
• B. Chitin
• C. Suberin
• D. Cutin
• E. Proteins

Explanation: Option A: Peptidoglycan: A type of polysaccharide found in the cell walls of bacteria and some archaea. Made up of repeating units of N-acetylglucosamine and N-acetylmuramic acid, which are linked together by peptide bonds. Option B: Chitin: A polysaccharide made up of repeating units of N-acetylglucosamine, which are linked together by beta-1,4 glycosidic bonds. Provides the cell wall with its strength and rigidity. Option C: Suberin: A type of waxy substance found in the cell walls of plants. Option D: Cutin: A type of fatty substance found in the outer layer of plant cell walls. Option E: Proteins are found in all cell walls, and they play a variety of roles, such as providing structure, anchoring the cell wall to other structures, and interacting with the environment.

68. Tetracycline and penicillins are:

• A. Disinfectants
• B. Antibiotics
• C. Antiseptics
• D. Antigens

Explanation: Option A: Disinfectants are chemicals that kill microorganisms on surfaces. They are used to clean and sanitize surfaces in hospitals, clinics, and other healthcare settings. Option B: Tetracycline and penicillins are antibiotics. Antibiotics are medications that kill or inhibit the growth of bacteria. They are used to treat bacterial infections, such as strep throat, pneumonia, and urinary tract infections. Option C: Antiseptics are chemicals that kill or inhibit the growth of microorganisms in living tissue. They are used to clean and disinfect wounds and other breaks in the skin. Option D: Antigens are substances that the body's immune system recognizes as foreign. They can trigger an immune response, which can lead to the production of antibodies.

69. All of the following are characteristics of kingdom fungi except:

• A. Heterotrophy
• B. Sessile
• C. Cell wall
• D. None of the above

Explanation: The correct answer is "None of these". Fungi are heterotrophic, absorbing nutrients from organic matter. They also have a cell wall made of chitin and are generally sessile. Options A, B, and C all describe true characteristics of fungi, making Option D correct.

70. Saccharomyces cerevisiae is the scientific name of a:

• A. Fungus
• B. Smut
• C. Bacterium
• D. Yeast

Explanation: The scientific names of the above-mentioned organisms are Fungus: Fungi, Smut: Smut Fungi(Basidiomycota), Bacteria: Different types of bacteria have different names., Yeast: Saccharomyces cerevisiae