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 130 of 157
- A. Upper antheridium and lower oogonium on the same plant
- B. Upper oogonium and lower antheridium on the same plant
- C. Antheridiophore and Archegoniophore on the same plant
- D. Stamen and carpel on the same plant
Explanation: (B) : All species of Chara reproduce sexually and show highly advanced oogamy.
Correct answer: Upper antheridium and lower oogonium on the same plant- A. Rhizopods
- B. Ciliates
- C. Flagellates
- D. Sporozoans
Explanation: This is the correct answer. Rhizopods are a group of protozoans characterized by the presence of pseudopodia, which are temporary…
Correct answer: Rhizopods- A. Pyrenoid
- B. Cilia
- C. Photoreceptor
- D. Flagellum
- E. Pellicle
Explanation: The correct answer is A Pyrenoid. One of the plant-like characteristics found in Euglena is the presence of a pyrenoid.
Correct answer: Pyrenoid- A. Bryophytes
- B. Bacteria
- C. Fungi
- D. Tracheophytes
- E. Algae
Explanation: Algae are plant-like protists. Therefore option E is the correct answer among all other given options.
Correct answer: Algae- A. Gonorrhea
- B. Syphilis
- C. AIDS
- D. Diabetes
Explanation: Option B is correct because Treponema pallidum is the causative organism for Syphilis.
Correct answer: Syphilis- A. Amoeba
- B. Euglena
- C. Plasmodium
- D. Paramecium
Explanation: Correct. Amoeba moves using pseudopods, which are temporary projections of the cell membrane.
Correct answer: Amoeba- A. Yellow
- B. Green
- C. Brown
- D. All of the given options
Explanation: Different species of dinoflagellates can cause water to appear yellow, green, or brown
Correct answer: All of the given options- A. Euglena
- B. Paramecium
- C. Proterospongia
- D. Amoeba
Explanation: Proterospongia is a colonial flagellate, not a true protozoan.
Correct answer: Proterospongia- A. Amoebae
- B. Zooflagellates
- C. Actinopods
- D. Choanoflagellates
Explanation: Ancestors of today's sponges may have been the first truly multicellular animals.
Correct answer: Choanoflagellates- A. Oospore
- B. Oogamous
- C. Zoospore
- D. Zygospore
Explanation: An oospore forms when an oogonium (female gamete) is fertilized by an antheridial (male gamete) nucleus; a characteristically thick wall…
Correct answer: Oospore- A. Have animals like characters only
- B. Have plants like characters only
- C. Have both animal and plants like characters
- D. Have bacteria like characters
- E. Have virus like characters
Explanation: "The explanation for this question will be added soon!".
Correct answer: Have both animal and plants like characters- A. Animal - like Protoctist
- B. Bacteria - like Protocist
- C. Plant - like Protocist
- D. Viruses - like Protocist
- E. Fungi - like Protocist
Explanation: "The explanation for this question will be added soon!".
Correct answer: Fungi - like Protocist- A. Gamete formation
- B. Zoospore formation
- C. Zygospore germination
- D. Vegetative reproduction
Explanation: c. In Ulothrix/Spirogyra, reduction division (meiosis) occurs at the time of zygospore germination.Plant body of Ulothrix and Spirogyra…
Correct answer: Zygospore germination- A. Mitochondrial Structure
- B. Importance of homopolar bonds in their proteins
- C. Cell wall structure
- D. Modern cell organization.
Explanation: c. The temperature tolerance of many blue-green algae in thermal springs (hot water springs) is attributed to their cell wall structure.
Correct answer: Cell wall structure2595. Hyphae of Oomycotes are?
- A. Septate
- B. Aseptate
- C. Semi-septate
- D. All of these
Explanation: The correct answer is that Oomycotes have aseptate hyphae. Unlike true fungi, which often have septate hyphae with cross-walls dividing…
Correct answer: Aseptate- A. Physarum
- B. Anabaena
- C. Rhizopus
- D. Phytophthora
Explanation: Physarum is classified as an acellular or plasmodial slime mold, which exhibits a unique life cycle that includes an amoeboid stage where…
Correct answer: Physarum- A. Asexual reproduction in Ulva typically involves the formation of motile zoospores.
- B. Sexual reproduction in Ulva results in the formation of a diploid zygote.
- C. Ulva reproduces through the fusion of diploid sporophytes.
- D. In Ulva, sexual plants are diploid gametophytes with 26 chromosomes.
- E. In asexual reproduction, a single parent cell forms multiple diploid zoospores.
Explanation: Ulva, commonly known as sea lettuce, can reproduce both asexually and sexually.
Correct answer: Sexual reproduction in Ulva results in the formation of a diploid zygote.- A. Plasmodium
- B. Trypanosoma
- C. Trichonymphas
- D. Entamoeba histolytica
Explanation: This question tests knowledge of parasitology, critical for medical students in infectious disease studies.
Correct answer: Trichonymphas- A. Mosquito
- B. House fly
- C. Tsetse fly
- D. None of these
Explanation: The correct answer is Option C:Tsetse fly. Trypanosoma, the parasitic protozoans that cause diseases like African sleeping sickness and…
Correct answer: Tsetse fly- A. Malaria
- B. Sleeping sickness
- C. Dysentery
- D. Polio
Explanation: Trypanosoma is a genus of kinetoplastid protozoa that causes sleeping sickness in humans.
Correct answer: Sleeping sickness