Protozoa Diversity: Characteristics and Importance
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Questions and Answers

What evolutionary mechanism does natural selection act on?

  • Alleles
  • Genetic drift
  • Genotypes
  • Phenotypes (correct)
  • Which process can introduce new genetic variation into a population?

  • Genetic drift
  • Natural selection
  • Gene flow (correct)
  • Hardy-Weinberg equilibrium
  • In which type of populations can genetic drift lead to significant evolutionary changes?

  • Populations experiencing gene flow
  • Populations in Hardy-Weinberg equilibrium
  • Large populations
  • Small populations (correct)
  • What equation is used to calculate allele and genotype frequencies within a population?

    <p>p^2+2pq+q^2=1</p> Signup and view all the answers

    In Hardy-Weinberg equilibrium, what value must the sum of p^2, 2pq, and q^2 equal to?

    <p>1</p> Signup and view all the answers

    Which group of protists is characterized by having flagella for locomotion?

    <p>Diatoms (Supergroup: Stramenopila)</p> Signup and view all the answers

    Which protist is classified under the Supergroup Alveolata and primarily exhibits photosynthetic nutrition?

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

    Which protist is characterized by having an eyespot for light detection and derived its chloroplasts from green algae?

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

    Which group of protists exhibits bioluminescence and is commonly associated with causing red tides?

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

    Which protist demonstrates a mixotrophic nutritional strategy and possesses a 'mouth' structure called the oral groove for ingesting food?

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

    What is one of the important roles lichens play in an ecosystem?

    <p>Initiating soil formation</p> Signup and view all the answers

    Which body form of lichens cannot be removed without damaging the substrate they grow on?

    <p>Crustose (Crusty Lichens)</p> Signup and view all the answers

    What is the main method of reproduction for Glomeromycota fungi?

    <p>Asexual through large multinucleate spores</p> Signup and view all the answers

    Why are arbuscular mycorrhizae structures important in the relationship between Glomeromycota fungi and plants?

    <p>Nutrient exchange occurs in the arbuscules within plant root cells</p> Signup and view all the answers

    Which characteristic sets fungi apart from plants in terms of cell walls composition?

    <p>Fungi have cell walls made of chitin, while plants have cellulose walls</p> Signup and view all the answers

    What is the primary method of reproduction for lichens?

    <p>Sexual reproduction through the dispersion of soredia</p> Signup and view all the answers

    What is the primary function of the fungus in the mutualistic relationship within lichens?

    <p>Offer structure, protection, and moisture</p> Signup and view all the answers

    Which best describes the role of lichens as environmental indicators?

    <p>Being sensitive to air pollution</p> Signup and view all the answers

    How do some lichens reproduce sexually?

    <p>Producing spores through the fungal partner</p> Signup and view all the answers

    Which characteristic makes lichens particularly valuable in the context of ecological roles?

    <p>Their sensitivity to changes in air quality</p> Signup and view all the answers

    Which of the following is NOT one of the five conditions a population must meet to be in Hardy-Weinberg equilibrium?

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

    In the context of genetic disorders, what is the term for individuals with one sickle cell allele and one normal allele?

    <p>Heterozygous for sickle cell allele</p> Signup and view all the answers

    What is the genetic material arrangement in prokaryotic cells?

    <p>Located in a nucleoid</p> Signup and view all the answers

    What is the main function of the cell wall in prokaryotic cells?

    <p>Maintaining cell shape and providing protection</p> Signup and view all the answers

    Which term refers to individuals with two normal alleles in the context of sickle cell disease?

    <p>Homozygous dominant</p> Signup and view all the answers

    Which group of organisms is characterized by flagellated, photosynthetic behavior in light and heterotrophic behavior in darkness?

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

    What trait is common among all organisms belonging to Opisthokonta?

    <p>Shared ancestry</p> Signup and view all the answers

    Which protozoan is known for causing sleeping sickness in humans?

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

    Which organism is famous for its pseudopodial movement and phagocytosis of food?

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

    Why are choanoflagellates significant in understanding the evolution of multicellular animals?

    <p>Their similarity to sponge cells hints at early animal evolution</p> Signup and view all the answers

    Which of the following statements about kelp is false?

    <p>Kelp is a parasitic organism.</p> Signup and view all the answers

    What is the main locomotion method of Plasmodium in its adult stage?

    <p>It is non-motile</p> Signup and view all the answers

    Which of the following is not a characteristic of Diatoms?

    <p>Known for bioluminescence</p> Signup and view all the answers

    What is the main nutritional mode of Ciliates like Paramecium?

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

    Nemalion is often found in marine environments and exhibits a bushy appearance due to its _______ structure.

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

    Which of the following organisms is commonly known for causing red tides?

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

    What is a distinguishing feature of Spirulina among the mentioned organisms?

    <p>Characterized by spiral chloroplasts</p> Signup and view all the answers

    What ecological role do Chromalveolata organisms like Brown Algae play?

    <p>Acting as primary producers in aquatic environments</p> Signup and view all the answers

    What type of habitat adaptation do Ciliates like Paramecium exhibit for movement and feeding?

    <p>Cilia for movement</p> Signup and view all the answers

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