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. Amoeba
- B. Escherichia
- C. Gelidium
- D. Spirogyra
Explanation: Escherichia belongs to the kingdom Monera, which is now considered an obsolete taxonomic classification.
Correct answer: Escherichia- A. Algae
- B. Fungi
- C. Bryophytes
- D. Pteridophytes
Explanation: Fungi are the correct answer. Fungi are classic examples of organisms that exhibit absorptive heterotrophic nutrition.
Correct answer: Fungi- A. Natural system
- B. Artificial system
- C. Phylogenetic system
- D. Asexual system
Explanation: Linnaeus indeed proposed an artificial system of plant classification, which was based on specific morphological characters, especially…
Correct answer: Artificial system- A. Leishmania donovani
- B. Trypanosoma gambiense
- C. Entamoeba histolytica
- D. Plasmodium vivax
Explanation: The correct option is B) Trypanosoma gambiense. A bite from the tsetse fly can transmit the parasite Trypanosoma gambiense to humans…
Correct answer: Trypanosoma gambiense- A. Cryptomerozoties
- B. Metacryptomerozoites
- C. Merozoites
- D. Trophozoites
Explanation: Malaria fever coincides with the liberation of merozoites. Cryptomerozoites: Cryptomerozoites are dormant forms of the malaria parasite…
Correct answer: Metacryptomerozoites- A. Sarcodina
- B. Zooflagellata
- C. Ciliata
- D. Sporozoa
Explanation: Trypanosoma belongs to the class Zooflagellata, which is a group of protozoa characterized by having flagella for movement in their active…
Correct answer: Zooflagellata- A. House fly
- B. Tsetse fly
- C. Sand fly
- D. Fruit fly
Explanation: The vector for sleeping sickness, also known as African trypanosomiasis, is the tsetse fly.
Correct answer: Tsetse fly- A. Show association between algae and fungi
- B. Grow faster than others
- C. Are sensitive to SO2
- D. Flourish in SO2 rich environment
Explanation: Lichens are composite organisms formed through a mutualistic association between a fungus and an alga or a cyanobacterium.
Correct answer: Are sensitive to SO2209. All eukaryotes that did not fit the definition of plants, fungi or animals were included in kingdom:
- A. Protista
- B. Prokaryote
- C. Monera
- D. Animalia
Explanation: The kingdom Protista consists of eukaryotic organisms that do not fit into the definitions of plants, fungi, or animals.
Correct answer: Protista- A. Plants
- B. Whale
- C. Animals
- D. Protists
Explanation: Protists are a diverse group of eukaryotic microorganisms that do not fit into the categories of plants, animals, or fungi.
Correct answer: Protists- A. Protista
- B. Poriferans
- C. Coelenterates
- D. Arthropods
Explanation: All the higher eukaryotic kingdoms like animalia, plantae and fungi are thought to be evolved from simple or colonial protists.
Correct answer: Protista- A. Blood Plasma
- B. A plant cell
- C. Skin cell
- D. Hepatocytes
Explanation: Viruses are obligate intracellular parasites, meaning they require a host cell's machinery to replicate and produce new viral particles.
Correct answer: Blood Plasma- A. Virus
- B. Viroid
- C. Virion
- D. Prion
Explanation: Viroids are small infectious agents that consist only of a single-stranded RNA molecule.
Correct answer: Viroid- A. Viruses contain both DNA and RNA
- B. No independent metabolic activities
- C. Viruses are non-cellular
- D. Tiny and infectious agent
Explanation: Viruses do not contain both DNA and RNA simultaneously. They can have either DNA or RNA as their genetic material, but not both at the…
Correct answer: Viruses contain both DNA and RNA- A. Kind of nucleic acids
- B. Kind of hosts
- C. Protein subunits
- D. Viral envelope
Explanation: The component responsible for the determination of the shape of a virus is the capsid.
Correct answer: Protein subunits- A. DNA
- B. Proteins
- C. RNA
- D. Glycoproteins
Explanation: Option B is correct.Prions are misfolded or infectious proteins with the ability to transmit their mis-folded shape onto normal variants…
Correct answer: Proteins- A. 152
- B. 252
- C. 162
- D. 262
Explanation: Option C is correct. Capsid of viruses is made up of protein subunits known as capsomeres.
Correct answer: 162- A. Viral DNA
- B. Viral RNA
- C. Most DNA
- D. T-lymphocytes
Explanation: Option B is correct.Reverse transcriptase is an enzyme that is essential for HIV replication.
Correct answer: Viral RNA- A. Nucleus
- B. Cytoplasm
- C. Inside viral capsid
- D. None of these
Explanation: Option A is correct.In HIV infected helper T-cells, the process of transcription occurs in nucleus while the process of reverse…
Correct answer: Nucleus- A. Leukocyte
- B. Monocyte
- C. Helper T-lymphocyte
- D. B-lymphocyte
Explanation: Option C is correct.Here are the definitions of leukocytes, monocytes, helper T-lymphocytes, and B-lymphocytes:Leukocyte: A leukocyte is a…
Correct answer: Helper T-lymphocyte