Free Biodiversity and Variety of Life MCQs with Answers
3,130 Biodiversity and Variety of Life MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Biological classification uses taxonomic ranks, binomial nomenclature and shared characteristics to organize life into kingdoms. The major groups include prokaryotes, protists, fungi, plants and animals, with comparisons based on cell type, cell wall, nutrition, body organization, reproduction and evolutionary relationships; prokaryotes lack a membrane-bound nucleus.
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- A. Basidiomycota
- B. Ascomycota
- C. Zygomycota
- D. Deutromycota
Explanation: The correct option is "Zygomycota." Zygomycota is a relatively small fungal group that includes fungi like bread molds (e.g., Rhizopus)…
Correct answer: Zygomycota- A. Spores
- B. Conidia
- C. Fragmentation
- D. Fission
Explanation: Conidia, on the other hand, are asexual spores produced by Ascomycota fungi.
Correct answer: Conidia- A. Basidiomycota
- B. Ascomycota
- C. Deuteromycota
- D. Zygomycota
Explanation: The correct option is "Ascomycota" because yeast is a member of this phylum.
Correct answer: Ascomycota- A. Crytococcus neofarmans
- B. Histoplasma capsulatum
- C. Coccidides immitis
- D. Candida albicans
- E. Mucor and rhizopus
Explanation: The correct option is "Candida Albicans" as it is the most common yeast species responsible for causing vaginal infections and thrush in…
Correct answer: Candida albicans- A. Mucor and Rhizopus
- B. Candida and Histoplasma
- C. Coccidioides and Cryptococcus
- D. Aspergillus and Penicillium
- E. Rhizopus and Penicillium
Explanation: The correct option is "Aspergillus & Penicillium." Fungi imperfecti, also known as Deuteromycetes or anamorphic fungi, is a group that…
Correct answer: Aspergillus and Penicillium1506. Mushroom belongs to:
- A. Zygomycota
- B. Ascomycota
- C. Basidiomycota
- D. Deuteromycota
- E. Fungi Imperfect
Explanation: The correct option is "Basidiomycota" because mushrooms are primarily associated with this phylum.
Correct answer: Basidiomycota- A. Mucor
- B. Rhizopus
- C. Candida albicans
- D. Penicillium
- E. A.fumigatus Flavus
Explanation: Aspergillus flavus is a fungus known for producing aflatoxins, which are potent carcinogenic mycotoxins.
Correct answer: A.fumigatus Flavus- A. Danger stools
- B. Toad stools
- C. Break stools
- D. Dark stools
- E. Fear stools
Explanation: "The correct option is "toad-stools" because it is the popular term used to refer to poisonous mushrooms.
Correct answer: Toad stools- A. Nuclear membrane break, spindle is formed outside nucleus
- B. Nuclear membrane break, spindle is formed within nucleus
- C. The nuclear membrane doesn't break, spindle is formed outside the nucleus
- D. Nuclear membrane doesn't break, spindle is formed within nucleus
Explanation: "In fungi, including both yeasts and filamentous fungi, the characteristic mitosis is referred to as "closed mitosis" or "nuclear…
Correct answer: Nuclear membrane doesn't break, spindle is formed within nucleus- A. Apothecium
- B. Cleistothecium
- C. Perithecium
- D. Parathecium
- E. Epithecium
Explanation: Perithecium refers to the opening of the ascocarp in ascomycete fungi. The ascocarp is a specialized reproductive structure that contains…
Correct answer: Apothecium1511. Ergotism is a:
- A. Viral disease
- B. Bacterial disease
- C. Fungal disease
- D. Parasitic disease
Explanation: Ergotism is a fungal disease, caused by the fungus Claviceps purpurea
Correct answer: Fungal disease- A. Ascomycota
- B. Basidiomycota
- C. Zygmycota
- D. Ascansmycota
- E. Deuteromycota.
Explanation: "Deuteromycota, also known as "fungi imperfecti" or "imperfect fungi," is a group that includes fungi that do not exhibit a known sexual…
Correct answer: Deuteromycota.- A. Endophytic Fungi
- B. Penicillium
- C. Ergot
- D. Rhodotorula
- E. Mycorrhizal Fungi
Explanation: Mycorrhizal fungi are symbiotic fungi that form mutualistic associations with the roots of most plants.
Correct answer: Mycorrhizal Fungi- A. Aspergillus flavus
- B. Candida albicans
- C. Agaricus compestris
- D. Histoplasma capsulatum
- E. Cryptococcus neoformans
Explanation: The scientific name of the button mushroom, which is a widely consumed edible mushroom, is Agaricus compestris.
Correct answer: Agaricus compestris- A. Absorption
- B. Reproduction
- C. Nutrition
- D. Locomotion
- E. Respiration
Explanation: Sporangiophores are specialized structures found in certain fungi, particularly in the group known as Zygomycetes.
Correct answer: Reproduction1516. Why do molds grow on refrigerated items like oranges and jelly, where bacteria typically cannot?
- A. They are well adapted to live on land
- B. Hyphae are modified
- C. They can tolerate temperature extremes (-5°C and up to 50°C)
- D. They have rhizoids
Explanation: Fungi like molds can grow at lower temperatures where bactaria usually cannot survive.
Correct answer: They can tolerate temperature extremes (-5°C and up to 50°C)1517. Yeasts are:
- A. Hyphal unicellular fungi
- B. Non-Hyphal unicellular fungi
- C. Hyphal multicellular fungi
- D. Non-Hyphal multicellular fungi
- E. All are incorrect
Explanation: Yeast are unicellular and do not form true hyphae.
Correct answer: Non-Hyphal unicellular fungi1518. All fungi :
- A. Have chlorophyll and are autotrophs
- B. Have chlorophyll and are heterotrophs
- C. Lack chlorophyll and are autotrophs
- D. Lack chlorophyll and are heterotrophs
Explanation: Fungi are heterotrophic organisms without chlorophyll.
Correct answer: Lack chlorophyll and are heterotrophs- A. Autotrophs
- B. Heterotrophs
- C. Saprotrophs
- D. Chemotrophs
Explanation: Fungi that obtain their food directly from dead organic matter are called Saprotrophs.
Correct answer: Saprotrophs- A. Autotrophs
- B. Saprotrophs
- C. Obligate Parasites
- D. Facultative Parasites
Explanation: Obligate parasites require a living host to survive and grow.
Correct answer: Obligate Parasites