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. Earnst Haeckel
- B. Herbert Copeland
- C. Margulis and Schwartz
- D. John Hogg
Explanation: A. Suggested creating the Kingdom Protista to include bacteria and other microorganisms that do not fit into the Kingdom AnimaliaB.
Correct answer: John Hogg- A. Amoebas-Euglena
- B. Actinopods-Radiolarians
- C. Foraminifera-Vorticella
- D. Ciliates-Paramecium
Explanation: A. Both are ProtistsB. Both are ProtozoansC. Rhizaria-ChromalveolataD. Both are Protozoans
Correct answer: Amoebas-Euglena- A. Entamoeba histolytica
- B. Amoeba
- C. Actinopods
- D. Ciliates
Explanation: Dysentery is an inflammation of the intestine causing diarrhea with blood
Correct answer: Entamoeba histolytica- A. Protozoans
- B. Algae
- C. Slime molds
- D. Fungi
Explanation: A. Unicellular nimal like protistsB. Unicellular and multicellular plant like protistsC. Fungus like protist
Correct answer: Fungi- A. Spherical or elongated bodies
- B. They possess from one to many whip-like flagella
- C. They occur only as parasites
- D. Trichonymphas are complex, specialized flagellates
Explanation: A. With single central nucleusB. Enable them to moveD. With many flagella which live as symbionts in guts
Correct answer: They occur only as parasites- A. Choanoflagellates
- B. Trypansoma
- C. Trichonymphas
- D. Paramecium
Explanation: A. Sessile marine or fresh water flagellatesC. Complex specialized flagellateD. Ciliate
Correct answer: Trypansoma- A. Plasmalemma
- B. Pellicle
- C. Cuticle
- D. Chitin
Explanation: A. Fine,short,hair like structureC. Function in sexual processD. Controls cell metabolism and growth
Correct answer: Pellicle- A. Calcium
- B. Silica
- C. Pores
- D. Limestone deposits
Explanation: A. Found in shells of foraminiferansB. Found in shells of actinopodsD. Foraminiferans of past have these deposits
Correct answer: Pores- A. Ameoba
- B. Radiolarians
- C. Forams
- D. Female Anopheles mosquito
Explanation: A. ZooflagellatesB. ActinopodC. Foraminifera
Correct answer: Female Anopheles mosquito- A. Euglenoids have no special evolutionary significance
- B. Classified in plant kingdom
- C. Classified in animal kingdom
- D. Some photosynthetic euglenoids lose their chlorophyll
Explanation: Some characteristic features of Euglenoids are as follows. • Euglenoids (such as Euglena) are unicellular protists commonly found in…
Correct answer: Some photosynthetic euglenoids lose their chlorophyll- A. Kelps
- B. Polysiphonia
- C. Red tides
- D. Ulva
Explanation: A. Largest brown algaeB. Red algaeD. Green algae
Correct answer: Red tides- A. Diatoms
- B. Dinoflagellates
- C. Actinopods
- D. Foraminiferans
Explanation: A. Silica deposited in shellB. Cells cover with shells of interlocking cellulose plates impregnated with silicateC. Made up of silica
Correct answer: Dinoflagellates- A. Amoebas
- B. Euglenophyta
- C. Diatoms
- D. Slime molds
Explanation: A. Producers second only to diatoms in marine ecosystemB. Often lose their chlorophyllC.Diatoms are responsible for over 40 percent of…
Correct answer: Diatoms- A. Laminaria
- B. Red tides
- C. Polysiphonia
- D. Trypanosoma
Explanation: A. Brown AlgaeB. DianoflagellatesD. Zooflagellates
Correct answer: Polysiphonia- A. Holdfast
- B. Pellicle
- C. Hyphae
- D. Pseudopodia
Explanation: A. Kelps have this root like structure B. Outer covering of ciliatesD. Found in amoeba
Correct answer: Pseudopodia- A. Zooflagellates
- B. Amoeba
- C. Actinopods
- D. Foraminifera
Explanation: Psuedopods are temporary projections of the protoplasm, as of certain protozoans, usually serving as an organ of locomotion.
Correct answer: Zooflagellates- A. Phytophthora infestans
- B. Physarum polycephalum
- C. Nostoc
- D. Plasmodium
Explanation: A. OomycotsC. Subaerial cyanobacterium D. Apicomplexans
Correct answer: Physarum polycephalum- A. It ingests bacteria, yeasts, spores and decaying organic matter
- B. Form resistant haploid spores
- C. Undergoes meiosis
- D. Their zygote produce single nucleated plasmodium
Explanation: A. As it creeps alongB. Under unfavorable conditionsC. Within stalked structure called sporangia
Correct answer: Their zygote produce single nucleated plasmodium- A. Amoebae
- B. Paramecium
- C. Trypanosome
- D. Plasmodium
Explanation: Trypanosomes move actively and progress by the movement of the undulating membrane and the free flagellum, which acts as a kind of…
Correct answer: Trypanosome- A. Amoeba proteus
- B. Naegleria fowleri
- C. Trichonympha
- D. Entamoeba histolytica
Explanation: Amoebic dysentery is an infection caused by any of the amoebae of the Entamoeba group.
Correct answer: Entamoeba histolytica