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.
Last updated
3,130 questions · page 152 of 157
- A. Class cyclostomata
- B. Class osteichthyes
- C. Class chondricthyes
- D. Ceplialochordate
Explanation: Placoid scales are a unique type of scales that are present in cartilaginous fishes like sharks and rays.
Correct answer: Class chondricthyes- A. Crocodile
- B. Frog
- C. Tiger
- D. Pigeon
Explanation: In the case of a pigeon, the gizzard is the part of their digestive system that helps with crushing and grinding food.
Correct answer: Pigeon- A. Cattle
- B. Tumefaciens
- C. Human
- D. Termite
Explanation: Trichonympha is a tiny organism that lives inside the digestive tract of termites.
Correct answer: Termite- A. Habituation
- B. Imprinting
- C. Operant learning
- D. Insight learning
Explanation: Imprinting is a behavior in which a young animal forms an attachment to another organism or object during a critical period early in life.
Correct answer: Imprinting3025. Hag fish belongs To:
- A. Cartilaginous fishes
- B. Bony fishes
- C. Cyclostomes
- D. Both (A) & (B)
Explanation: Hagfish, also known as cyclostomes, are a type of jawless fish. They have a unique anatomy and behavior compared to cartilaginous fishes…
Correct answer: Cyclostomes- A. Annelida
- B. Arthropoda
- C. Chordata
- D. Coelenterata
Explanation: The largest phylum of animals is the phylum Arthropoda. It includes insects, spiders, crustaceans, and other joint-legged organisms.
Correct answer: Arthropoda- A. cellulose
- B. chitin
- C. murein
- D. hemi-cellulose
Explanation: Option B is correct. Chitin is found in the exoskeleton of crabs. Chitin is a tough, fibrous material that is made up of long chains of…
Correct answer: chitin- A. Apothecium
- B. Perithecium
- C. Hysterothylacium
- D. Cleistothecium
Explanation: The correct answer is Apothecium. An apothecium is a cup-shaped ascocarp with an exposed hymenium.
Correct answer: Apothecium- A. Alternaria_solani
- B. Phytophthora_infestans
- C. Erysiphe_graminls
- D. Claviceps_purpurea
Explanation: Alternaria solani is the correct answer as it is the fungal pathogen responsible for early blight of potato, causing specific symptoms on…
Correct answer: Alternaria_solani- A. Athletes foot
- B. Ringworm
- C. Dandruff
- D. Ergot
Explanation: Microsporum furfur is a type of fungus that is associated with the condition known as dandruff.
Correct answer: Dandruff- A. Facultative saprophyte
- B. Facultative parasite
- C. Obligate saprophyte
- D. Obligate parasite
Explanation: Saprophytic is the mode of nutrition in which organisms feed on dead and decayed matter, a facultative saprophyte ia a mainly parasitic…
Correct answer: Facultative saprophyte- A. Zygomycota
- B. Ascomycota
- C. Basidiomycota
- D. Deutromycota
Explanation: Yeasts are unicellular fungi that reproduce asexually by budding. They are commonly classified within the phylum Ascomycota.
Correct answer: Ascomycota- A. Monera
- B. Protista
- C. Plantae
- D. Fungi
Explanation: In the kingdom Fungi, nuclear mitosis is a distinctive feature. Unlike other kingdoms, the mitotic spindle forms inside the nuclear…
Correct answer: Fungi- A. zygomycota
- B. ascomycota
- C. basidiomycota
- D. deuteromycota
Explanation: Rust and smut diseases are caused by fungi that belong to the phylum Basidiomycota.
Correct answer: basidiomycota- A. Athlete's foot
- B. Ringworm
- C. Dandruff
- D. None of these
Explanation: Microsporum furfur is a fungus that can cause ringworm, a type of dermatophyte infection.
Correct answer: Ringworm3036. Sea-fungi is related to:
- A. Zygomycota
- B. Ascomycota
- C. Basidiomycota
- D. Deuteromycota
Explanation: Sea fungi are related to Basidiomycota.Basidiomycota is a phylum of fungi that includes many well-known groups, such as mushrooms…
Correct answer: Ascomycota3037. Black bread mold is:
- A. Rhizopus
- B. Penicillium
- C. Mucor
- D. Yeast
Explanation: Black bread mold is Rhizopus.Rhizopus is a common genus of fungi that includes species responsible for causing the black bread mold.
Correct answer: Rhizopus3038. An Ascus develops:
- A. 2-Ascospores
- B. 4-Ascospores
- C. 6-Ascospores
- D. 8-Ascospores
Explanation: Typically, a single ascus will contain eight ascospores which are produced by meiosis followed by a mitotic division.
Correct answer: 8-Ascospores- A. Club-mosses
- B. Club-fungi
- C. Sac-fungi
- D. Bread mold
Explanation: Basidiomycota is a large and diverse phylum of fungi that includes jelly and shelf fungi; mushrooms, puffballs, and stinkhorns; certain…
Correct answer: Club-fungi- A. Secondary mycelium
- B. Primary mycellum
- C. Tertiary mycelium
- D. Pathogenic parasites
Explanation: Basidiocarp, in fungi, is a large sporophore, or fruiting body, in which sexually produced spores are formed on the surface of club-shaped…
Correct answer: Tertiary mycelium