Protists
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Questions and Answers

What is the primary characteristic that distinguishes eukaryotic micro-organisms from prokaryotic micro-organisms?

  • The ability to photosynthesize
  • The presence of cell walls
  • The ability to form symbiotic relationships
  • The presence of membrane-bound organelles (correct)

    • What is the primary difference between yeast and multicellular fungi?

  • The number of cells (correct)
  • The number of cell walls
  • The type of energy production
  • The presence of chlorophyll

    • Which of the following is an example of a protozoan?

  • Seaweed
  • Amoeba (correct)
  • Bacterium
  • Mushroom

    • What is the term for eukaryotic micro-organisms that are mostly unicellular?

    <p>Protists</p> Signup and view all the answers

    Which of the following is NOT a characteristic of protists?

    <p>They have cell walls</p> Signup and view all the answers

    What is the term for the domain that includes protists and fungi?

    <p>Domain Eukarya</p> Signup and view all the answers

    Which type of protist is characterized by the presence of chlorophyll and a cell wall?

    <p>Algae</p> Signup and view all the answers

    What is the mode of nutrition in protists that contain chloroplasts and perform photosynthesis?

    <p>Photoautotrophs</p> Signup and view all the answers

    Which of the following supergroups of Eukarya includes the kingdoms of Animals, Plants, and Fungi?

    <p>Unikonts</p> Signup and view all the answers

    What is the mode of reproduction in most protists?

    <p>Either asexual or sexual reproduction</p> Signup and view all the answers

    Which of the following protist groups is characterized by the presence of cilia or flagella for motility?

    <p>Protozoa</p> Signup and view all the answers

    What is the characteristic of some protist species that allows them to form multicellular colonies?

    <p>Capacity to form multicellular colonies</p> Signup and view all the answers

    What is the characteristic feature of the apex of Apicomplexans?

    <p>Specialized for penetrating host cells and tissues</p> Signup and view all the answers

    Which of the following is NOT a route of transmission for Toxoplasma gondii?

    <p>Mosquito bite</p> Signup and view all the answers

    What is the result of Natural selection on the thalassaemia allele carriers in areas with high prevalence of malaria?

    <p>Selective survival of the thalassaemia allele carriers</p> Signup and view all the answers

    What is the life cycle of Apicomplexans dependent on?

    <p>Two or more different host species</p> Signup and view all the answers

    What is the result of Plasmodium malariae infection in Red Blood Cells?

    <p>Haemoglobin digestion</p> Signup and view all the answers

    What is the approximate number of deaths per year caused by malaria?

    <p>900,000</p> Signup and view all the answers

    What is responsible for the red color of red algae?

    <p>Phycoerythrin</p> Signup and view all the answers

    Which group of organisms includes slime molds and gymnamoebas?

    <p>Amoebozoans</p> Signup and view all the answers

    What is the common name of the green alga Ulva?

    <p>Sea lettuce</p> Signup and view all the answers

    Which group of organisms includes land plants and green algae?

    <p>Archaeplastids</p> Signup and view all the answers

    What is the name of the protist group that includes the species Bonnemaisonia hamifera?

    <p>Red algae</p> Signup and view all the answers

    What is the primary function of cilia in ciliates?

    <p>Motility</p> Signup and view all the answers

    Which of the following characteristics is common to both dinoflagellates and diatoms?

    <p>Presence of flagella</p> Signup and view all the answers

    Which group of protists includes water molds and their relatives?

    <p>Oomycetes</p> Signup and view all the answers

    What is the primary function of pseudopodia in Rhizaria?

    <p>Motility and phagocytosis</p> Signup and view all the answers

    Which of the following protists is characterized by the presence of smooth or hairy flagella?

    <p>Stramenopiles</p> Signup and view all the answers

    Which of the following protists is an example of a parasitic oomycete?

    <p>Phytophthora infestans</p> Signup and view all the answers

    What is a characteristic of protozoa?

    <p>Not having a cell wall or chlorophyll</p> Signup and view all the answers

    What is a common feature of eukaryotic micro-organisms?

    <p>Having a true nucleus</p> Signup and view all the answers

    What type of fungi is characterized by being unicellular?

    <p>Yeasts</p> Signup and view all the answers

    What is a characteristic of protists that are pathogenic?

    <p>Being eukaryotic parasites</p> Signup and view all the answers

    What is a category of protists that includes seaweeds?

    <p>Algae</p> Signup and view all the answers

    What is the kingdom that includes protists and fungi?

    <p>Eukarya</p> Signup and view all the answers

    What is a characteristic of multicellular fungi?

    <p>Having a cell wall and being multicellular</p> Signup and view all the answers

    What is the term for eukaryotic micro-organisms that are mostly multicellular?

    <p>Macroorganisms</p> Signup and view all the answers

    What is a characteristic of diplomonad parasites?

    <p>They have modified mitochondria</p> Signup and view all the answers

    Which of the following parasites is transmitted through food and causes gastroenteritis?

    <p>Giardia intestinalis</p> Signup and view all the answers

    What is a characteristic of euglenozoans?

    <p>They have a spiral or crystalline rod inside their flagella</p> Signup and view all the answers

    Which of the following is an example of a parabasalid parasite?

    <p>Trichomonas vaginalis</p> Signup and view all the answers

    What is the primary function of flagella in protozoa?

    <p>To move around</p> Signup and view all the answers

    Which of the following is a characteristic of trypanosomes?

    <p>They have a spiral or crystalline rod inside their flagella</p> Signup and view all the answers

    What is the mode of transmission of Trichomonas vaginalis?

    <p>Sexually transmitted</p> Signup and view all the answers

    Which of the following groups of organisms includes Giardia intestinalis and Trichomonas vaginalis?

    <p>Excavates</p> Signup and view all the answers

    What is the characteristic feature of the apex of Apicomplexans?

    <p>Organelles specialized for penetrating host cells and tissues</p> Signup and view all the answers

    What is the mode of transmission of Plasmodium malariae?

    <p>Mosquito bites</p> Signup and view all the answers

    What is the result of Natural selection on the thalassaemia allele carriers in areas with high prevalence of malaria?

    <p>Selective survival</p> Signup and view all the answers

    What is the life cycle of Apicomplexans dependent on?

    <p>Two or more different host species</p> Signup and view all the answers

    What is the result of Plasmodium malariae infection in Red Blood Cells?

    <p>Digestion of haemoglobin</p> Signup and view all the answers

    What is the approximate number of deaths per year caused by malaria?

    <p>900,000</p> Signup and view all the answers

    What is the route of transmission of Toxoplasma gondii from mother to fetus?

    <p>Trans-placental transmission</p> Signup and view all the answers

    Which of the following is a characteristic of Apicomplexans?

    <p>They require two or more different host species</p> Signup and view all the answers

    What is the primary function of photosynthetic protists in aquatic environments?

    <p>To provide energy to other organisms</p> Signup and view all the answers

    Which of the following protist groups is characterized by the presence of lobe-shaped pseudopodia?

    <p>Amoebozoa</p> Signup and view all the answers

    What is the disease caused by the protist Entamoeba histolytica?

    <p>Amebic dysentery</p> Signup and view all the answers

    Which of the following supergroups includes the protist group Acanthamoeba?

    <p>Unikonts</p> Signup and view all the answers

    What is the role of wood-digesting protists in the gut of termites?

    <p>To break down cellulose</p> Signup and view all the answers

    Which of the following protists is a symbiont in the development of coral reefs?

    <p>Dinoflagellates</p> Signup and view all the answers

    What is the disease caused by the protist Acanthamoeba?

    <p>Eye infection and encephalitis</p> Signup and view all the answers

    Which of the following protist groups is characterized by the presence of flagella for motility?

    <p>Euglenozoans</p> Signup and view all the answers

    What is the characteristic pigment responsible for the red color of red algae?

    <p>Phycoerythrin</p> Signup and view all the answers

    Which group of protists includes Volvox, a colonial freshwater green alga?

    <p>Archaeplastids</p> Signup and view all the answers

    What is the characteristic shape of the pseudopodia in Amoebozoans?

    <p>Lobe or tube shaped</p> Signup and view all the answers

    Which supergroup includes land plants, green algae, and red algae?

    <p>Archaeplastids</p> Signup and view all the answers

    What is the name of the green alga commonly known as sea lettuce?

    <p>Ulva</p> Signup and view all the answers

    Which group of protists includes Nucleariids and Choanoflagellates?

    <p>Opisthokonts</p> Signup and view all the answers

    What is the habitat of Gymnamoebas?

    <p>Aquatic environments</p> Signup and view all the answers

    Which group of protists includes pathogenic species, such as Entamoebas?

    <p>Amoebozoans</p> Signup and view all the answers

    Which of the following protist groups can form multicellular colonies?

    <p>Algae</p> Signup and view all the answers

    What is the mode of nutrition in protists that contain chloroplasts and perform photosynthesis?

    <p>Photoautotrophs</p> Signup and view all the answers

    Which of the following supergroups includes land plants, green algae, and red algae?

    <p>Archaeplastids</p> Signup and view all the answers

    Which of the following protist groups can have various modes of nutrition, including photosynthesis and phagocytosis?

    <p>Protists</p> Signup and view all the answers

    What is the characteristic of protists that can absorb organic molecules or ingest larger food particles?

    <p>Heterotrophs</p> Signup and view all the answers

    Which of the following supergroups includes the kingdoms of Animals, Plants, and Fungi?

    <p>Domain Eukarya</p> Signup and view all the answers

    What is the characteristic of the mitochondria in diplomonads?

    <p>They are modified</p> Signup and view all the answers

    What is the characteristic of the flagella in euglenozoans?

    <p>They have a spiral or crystalline rod</p> Signup and view all the answers

    Which disease is caused by the parabasalid parasite Trichomonas vaginalis?

    <p>All of the above</p> Signup and view all the answers

    What is the method of transmission of the diplomonad parasite Giardia intestinalis?

    <p>Food-borne</p> Signup and view all the answers

    What is the characteristic of the nucleus in Trichomonas vaginalis?

    <p>It is large</p> Signup and view all the answers

    Which supergroup includes diplomonads, parabasalids, and euglenozoans?

    <p>Excavates</p> Signup and view all the answers

    Which of the following groups of organisms is characterized by the presence of phycoerythrin pigment?

    <p>Red algae</p> Signup and view all the answers

    Which supergroup includes both Amoebozoans and Opisthokonts?

    <p>Unikonts</p> Signup and view all the answers

    What is the characteristic shape of the pseudopodia in Gymnamoebas?

    <p>Tube-shaped</p> Signup and view all the answers

    Which of the following groups of organisms includes Volvox and Caulerpa?

    <p>Green algae</p> Signup and view all the answers

    Which of the following is a characteristic of Entamoebas?

    <p>They include pathogenic species</p> Signup and view all the answers

    What is unique about the life cycle of Apicomplexans?

    <p>They require two or more different host species for completion.</p> Signup and view all the answers

    What is the function of the organelles at the apex of Apicomplexans?

    <p>To penetrate host cells and tissues</p> Signup and view all the answers

    Which of the following is a consequence of Plasmodium malariae infection in red blood cells?

    <p>Digestion of haemoglobin</p> Signup and view all the answers

    How is Toxoplasma gondii transmitted from mother to fetus?

    <p>Through the trans-placental route</p> Signup and view all the answers

    What is the characteristic of the infectious cells called sporozoites?

    <p>They infect liver cells</p> Signup and view all the answers

    What is the result of Natural selection on the thalassaemia allele carriers in areas with high prevalence of malaria?

    <p>Selective survival of the carriers</p> Signup and view all the answers

    Which characteristic is common to both dinoflagellates and diatoms?

    <p>They are both photosynthetic protists</p> Signup and view all the answers

    What is the primary function of cilia in ciliates?

    <p>To move and feed</p> Signup and view all the answers

    Which group of protists includes golden algae and brown algae?

    <p>Stramenopiles</p> Signup and view all the answers

    What is the role of oomycetes in the environment?

    <p>They are decomposers or parasites</p> Signup and view all the answers

    What is the characteristic feature of pseudopodia in Rhizaria?

    <p>They are threadlike</p> Signup and view all the answers

    What is the function of contractile vacuoles in ciliates?

    <p>To regulate water balance</p> Signup and view all the answers

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