Biology Quiz on Protists and Algae
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Questions and Answers

What pigment gives brown algae its color?

  • Fucoxanthin (correct)
  • Phycobilin
  • Carotene
  • Chlorophyll

    • All algae are multicellular organisms.

    False

    What structure do Paramecium use to move?

    Cilia

    Foraminiferans have porous shells called __________.

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

    Match the following clades with their examples:

    <p>Stramenopila = Sargassum Alveolata = Paramecium Rhizaria = Foraminifera</p> Signup and view all the answers

    Which of the following is NOT one of the four main supergroups of protists?

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

    All protists are classified as a monophyletic group.

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

    Name the group that includes all organisms descended from a common ancestor but does not include all common descendants.

    <p>Paraphyletic group</p> Signup and view all the answers

    The most diverse group of eukaryotes is known as __________.

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

    What is the purpose of measuring the zones of inhibition in bacteriology?

    <p>To determine the effectiveness of antibiotics or disinfectants</p> Signup and view all the answers

    Match the descriptions with the corresponding group of organisms:

    <p>Monophyletic = All descendants of a common ancestor Polyphyletic = Organisms from different ancestors grouped together Paraphyletic = Some descendants of a common ancestor excluded Eukaryotes = Organisms with a defined nucleus</p> Signup and view all the answers

    There are currently seven main clades within the four supergroups of protists.

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

    What characteristic does the paraphyletic group of protists specifically exclude?

    <p>Land plants, animals, and fungi</p> Signup and view all the answers

    What is a distinguishing feature of the Excavata supergroup?

    <p>Primitive red eyespot</p> Signup and view all the answers

    All members of the Stramenopila clade are autotrophs.

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

    Name an example of an organism from the Excavata supergroup.

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

    Diatoms generate approximately _______ of Earth’s oxygen annually.

    <p>20%</p> Signup and view all the answers

    Match the following features with their respective groups:

    <p>Excavata = Heterotrophs, autotrophs, parasitic Stramenopila = Planktonic and generate 20% of oxygen Diatoms = Two-part glass-like wall Trypanosoma = Found in rat blood</p> Signup and view all the answers

    Which of the following describes a characteristic of diatoms?

    <p>Contain a two-part, glass-like wall</p> Signup and view all the answers

    Diatoms are primarily found in freshwater habitats only.

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

    What type of symmetry does the centric body form of diatoms exhibit?

    <p>Radial symmetry</p> Signup and view all the answers

    What type of protists can synthesize their own food through photosynthesis?

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

    All protists are capable of photosynthesis.

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

    Name one example of a unicellular parasite from the clade Euglenozoa.

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

    Slime molds obtain their food by __________.

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

    Match the following protist supergroups with their examples:

    <p>Excavata = Trypanosoma SAR = Diatoms Archaeplastida = Ulva Unikonta = Amoeba</p> Signup and view all the answers

    Which of the following statements is true regarding mixotrophs?

    <p>They obtain nutrition through both photosynthesis and consumption.</p> Signup and view all the answers

    Forams and radiolarians are examples of the clade Amoebozoans.

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

    What environments do protists inhabit?

    <p>Freshwater, saltwater, and parasitic environments.</p> Signup and view all the answers

    What is a distinguishing feature of Foraminifera?

    <p>Calcium carbonate shells</p> Signup and view all the answers

    Radiolarians have their tests made of calcium carbonate.

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

    What type of nutrition do Foraminifera primarily exhibit?

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

    Radiolarians feed on microorganisms through __________.

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

    Match the following groups with their characteristics:

    <p>Foraminifera = Calcium carbonate shells Radiolarians = Silica shells Diatoms = Glass-like tests Symbiotic algae = Provide food and shelter</p> Signup and view all the answers

    What is the primary mode of nutrition for green algae?

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

    Amoeba has a regular body shape and is multicellular.

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

    What are the distinguishing features of Ulva?

    <p>Multicellular thallus differentiated into leaf-like blades and root-like holdfasts.</p> Signup and view all the answers

    Amoebas move using __________.

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

    Match the following algae classifications with their characteristics:

    <p>Spirogyra = Filamentous green alga with a green double helix of chloroplasts Ulva = Multicellular green algae also known as sea lettuce Volvox = Colonial green algae with motile flagellated cells Amoeba = Unicellular organism that moves using pseudopodia</p> Signup and view all the answers

    Which of the following habitats can green algae be found in?

    <p>Both freshwater and saltwater</p> Signup and view all the answers

    All members of the Archaeplastida clade contain chlorophylls a & b.

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

    Green algae have cell walls composed of __________.

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

    Study Notes

    Lab 18: Protists - Overview

    • Protists are the most diverse group of eukaryotes.
    • They are classified by supergroups and clades.
    • Protists employ various life strategies, including autotrophy (photosynthesis), heterotrophy (consuming other organisms), and mixotrophy (both photosynthesis and consuming other organisms).
    • Protists inhabit diverse environments, including freshwater, saltwater, and as parasites.
    • Protists also employ diverse reproductive strategies: both sexual and asexual reproduction.

    Upcoming Activities

    • Quiz 4: Covers material from labs 16-18 (November 25)
    • Lab Report (Final Draft): Due December 2, 11:59 PM. Students should update their drafts in real-time on Google Drive.

    Bacteriology Results - 12.4A and 12.4B

    • Students are required to measure zones of inhibition around antibiotic and antiseptic disks on culture plates.
    • Measurements should be recorded in lab notebooks.
    • Before growth images show bacterial growth while after growth images show no bacterial growth (zone of inhibition).
    • The study and analysis of bacteria sensitivity will take place using the zones of inhibition technique

    Bacteriology Results - 12.3A and 12.3B

    • Using a stereoscopic microscope, analyze bacterial colonies formed on petri dishes
    • Determine colony shape (Punctiform, Round, Filamentous, Irregular)
    • Characterize colony margins (Smooth, Curled, Wavy, Lobate, Filamentous)
    • Evaluate surface features (Smooth, Concentric, Wrinkled, Contoured)
    • Assess colony Opacity (opaque, translucent, or transparent) and pigmentation

    Phylogenetics

    • Monophyletic: A group of organisms that are all descended from a common ancestor and the common ancestor itself.
    • Polyphyletic: A group of organisms that do not include the most recent common ancestor.
    • Paraphyletic: A group of organisms descended from a common ancestor but does not include all the descendants of that common ancestor

    Protist Taxonomy: Supergroups and Clades

    • Four main supergroups: Excavata, SAR, Unikonta, Archaeplastida
    • These supergroups house seven main clades.

    Protist Taxonomy: Clades

    • Examples of specific clades and their characteristic features, and the methods for observing them are listed.

    Exercise 13.1 : Supergroup Excavata, Clade Euglenozoa

    • Trypanosoma: A parasitic unicellular organism found in rat blood, transmitted by fleas.
    • Its long, thin structure and undulating membrane facilitate movement through viscous blood.

    Specific Examples

    • Specific examples of protists, like Trypanosoma, Paramecia, Diatoms, Sargassum (brown algae), forams (with calcium carbonate shells), Radiolarians (with silica shells), Amoeba, Spirogyra, Ulva (sea lettuce), and Rhodophyta (red algae) are described along with key features and methods for observation.
    • Images of these specimens under different magnifications (e.g., 100X, 400X) are also present within the slides.

    Other Notes

    • Students are expected to have labelled sketches of all specimens, and fill out a table for each organism studied in class as a study guide.

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    Related Documents

    Lab 18: Protists (Fall 2024) - Lab Manual/Notes PDF

    Description

    Test your knowledge about protists and algae in this insightful quiz. You'll cover topics from the structure and movement of microorganisms to the characteristics of various clades. Perfect for students exploring the diverse world of eukaryotic life!

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