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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2621. Pinnularia belongs to
- A. Chlorophyta
- B. Chrysophyta
- C. Pheophyta
- D. Rhodophyta
Explanation: Pinnularia is a genus of diatoms, which belong to the division Chrysophyta.
Correct answer: Chrysophyta- A. Green algae
- B. Brown algae
- C. Red algae
- D. Golden algae
Explanation: Brown algae are known as the giants of the protist kingdom because they include some of the largest and most structurally complex…
Correct answer: Brown algae- A. The euglenoids
- B. Diatoms
- C. Brown algae
- D. Red algae
Explanation: Brown algae, specifically those in the order Laminariales, commonly known as kelp, are known to form large and complex multicellular…
Correct answer: Brown algae- A. Golden algae
- B. Euglenoids
- C. Kelps
- D. Diatoms
Explanation: The correct answer is Kelps. Kelps are a type of large brown algae that exhibit complex structural differentiation into blades, stipes…
Correct answer: Kelps- A. Laminaria
- B. Volvox
- C. Polysiphonia
- D. Ulva
Explanation: The correct answer is Laminaria. Laminaria is a type of brown algae that is characterized by its holdfast, which anchors it to surfaces; a…
Correct answer: Laminaria- A. Red
- B. Brown
- C. Green
- D. All of these
Explanation: The correct answer is Red algae. Red algae, especially coralline algae, play a significant role in the formation and stabilization of…
Correct answer: Red- A. Laminaria
- B. Volvox
- C. Polysiphonia
- D. Ulva
Explanation: The correct answer is Polysiphonia. Polysiphonia is known for its intricate body structure composed of delicate, feathery interwoven…
Correct answer: Polysiphonia- A. Have chlorophyll 'a' and 'b'
- B. Starch as storage of energy
- C. Cell wall of cellulose
- D. All of these
Explanation: The correct answer is All of these. Green algae are considered the ancestors of land plants because they share several key…
Correct answer: All of these- A. Genetic material
- B. Lipids
- C. Protein
- D. Carbohydrates
Explanation: The correct answer is Genetic material. Genetic material, particularly DNA sequences, is used to trace evolutionary relationships and…
Correct answer: Genetic material- A. Ulva
- B. Volvox
- C. Kelps
- D. Chlorella
Explanation: The correct answer is Kelps. Kelps are classified as brown algae, not green algae, and belong to the class Phaeophyceae.
Correct answer: Kelps- A. Ulva
- B. Volvox
- C. Chlorella
- D. Kelps
Explanation: Chlorella is a type of green algae that is highly nutritious, containing proteins, vitamins, minerals, and antioxidants.
Correct answer: Chlorella- A. Myxomycota
- B. Oomycetes
- C. Amoeba
- D. Apicomplexans
Explanation: The correct answer is Myxomycota. In the life cycle of Myxomycota, the feeding stage is called a plasmodium, which is a large…
Correct answer: Myxomycota- A. Oomycetes
- B. Myxomycota
- C. Brown algae
- D. Red algae
Explanation: The correct answer is Myxomycota. These protists are known for their life cycle, which includes the formation of spores after meiosis.
Correct answer: Myxomycota- A. Zooflagellates
- B. Desmids
- C. Radiolarians
- D. Slime molds
Explanation: Slime molds are often used as model organisms because they exhibit fascinating behaviors such as cytoplasmic streaming, which is crucial…
Correct answer: Slime molds- A. Water molds
- B. Slime molds
- C. Brown algae
- D. Apicomplexans
Explanation: Water molds, or oomycetes, are protists that are closely related to fungi due to their filamentous structure and method of nutrient…
Correct answer: Water molds- A. Oomycetes
- B. Green algae
- C. Dinoflagellates
- D. All of these
Explanation: The correct answer is Oomycetes. Oomycetes are a group of protists known for having cell walls composed of cellulose, similar to plants…
Correct answer: Oomycetes- A. Myxomycota
- B. Oomycotes
- C. Foraminifera
- D. Apicomplexans
Explanation: The correct answer is Oomycotes. Oomycotes, or water molds, are a group of protists known for causing plant diseases, including the…
Correct answer: Oomycotes- A. Trypanosoma cruzi
- B. T. rhodesiense
- C. T. tangela
- D. T. gambiense
Explanation: The causal organism for African sleeping sickness, also known as African trypanosomiasis, is Trypanosoma gambiense.
Correct answer: T. gambiense2639. The part of life cycle of malarial parasite Plasmodium vivax, that is passed in female Anopheles is
- A. Sexual cycle
- B. Preerythrocytic schizogony
- C. Exoerythrocytic schizogony
- D. Posterythrocytic schizogony
Explanation: Let's explain each option individually:a) Sexual cycle:This option is correct.
Correct answer: Sexual cycle- A. Ronald Ross
- B. Mendel
- C. Laveran
- D. Stephans
Explanation: Charles Louis Alphonse Laveran, a French physician, was the one who discovered Plasmodium in the red blood cells (RBCs) of human beings.
Correct answer: Laveran