Biology: Concepts and Investigations
5th Edition
ISBN: 9781260259049
Author: Hoefnagels
Publisher: MCG
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Textbook Question
Chapter 18, Problem 3PIT
Molecular data have changed protist classification. Use a red pen 10 circle the protist groups classified as stramenopiles; use a blue pen 10 circle the groups classified as alveolates.
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1) Make a graphic/visual organizer of the four supergroups of Protists and the major groups of protists.
2) The graphic organizer must include all the following major groups. Include one example organism and one derived character (shared by most or all members of the group).
A parasitic protist has been isolated and is on a microscope slide. How could you
determine whether it belongs to te Apicomplexans or Excavata supergroup?
Look for spores which would indicate Excavata
Look for flagella which would indicate Excavata
There is no way to distinguish based on structural characteristics.
Look for flagella which would indicate Apicomplexans
The basidium of the club fungi could be correctly described as;
A reproductive structure that produces diploid spores
A sexual reproductive structure that produces 4 haploid spores
An asexual reproductive structure that produces thousands of spores
A sexually reproductive structure that produces 8 haploid spores
Chapter 18 Solutions
Biology: Concepts and Investigations
Ch. 18.1 - What features define the protists?Ch. 18.1 - Prob. 2MCCh. 18.1 - Why are evolutionary biologists interested in...Ch. 18.2 - Prob. 1MCCh. 18.2 - Prob. 2MCCh. 18.2 - List and describe the characteristics of the major...Ch. 18.3 - What mode of nutrition do the slime molds and...Ch. 18.3 - Prob. 2MCCh. 18.3 - Prob. 3MCCh. 18.4 - Prob. 1MC
Ch. 18.4 - Prob. 2MCCh. 18.4 - List three diseases caused by flagellated...Ch. 18.4 - Compare and contrast amoebae, foraminiferans, and...Ch. 18.4 - How do ciliates move and eat?Ch. 18.4 - Prob. 6MCCh. 18.5 - Prob. 1MCCh. 18.5 - Prob. 2MCCh. 18.6 - Use the food chain in figure 18.21a to explain why...Ch. 18.6 - Prob. 2MCCh. 18 - Which of the following is NOT a characteristic of...Ch. 18 - Suppose you are studying a protist under a...Ch. 18 - Some protist lineages arose from secondary...Ch. 18 - Prob. 4MCQCh. 18 - Why are DNA sequences useful in the classification...Ch. 18 - Explain why evolutionary biologists are interested...Ch. 18 - The amoeba Pelomyxa palustris is a single-celled...Ch. 18 - How is it adaptive for a red alga to have pigments...Ch. 18 - How are kelp similar to trees? How are they...Ch. 18 - Prob. 5WIOCh. 18 - Prob. 6WIOCh. 18 - Prob. 7WIOCh. 18 - Suppose someone hands you a microscope and a...Ch. 18 - Review the Survey the Landscape figure in the...Ch. 18 - Prob. 2PITCh. 18 - Molecular data have changed protist...
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- The phylum Protista has often been referred to as a junk drawer of classification. Explain what is meant by this term.arrow_forwardIs protist dna in a nucleus unicellular or multicellular?According to the phylogeny presented in this chapter which protists are in the same eukaryotic supergroup as plants a) green algae b) dinoflagellates c) red algaed both a and c in a lifecycle with alternation of generations multicellular haploid forms alternate with a unicellular haploid forms b unicellular diploid formsc multicellular haploid forms d) multicellular diploid formsarrow_forwardWhich of the following explains why protists are considered a paraphyletic group? A Protists are prokaryotic. B Protists cannot be a monophyletic group because their morphology and behavior are so variable. C Protists lack a common ancestor. O D The MRCA of the protists also gave rise to plants, animals, and fungi. O E Choices B and D are both correct.arrow_forward
- List some examples of protist diversity. How do different protist groups obtain energy? How do they move? Describe the differences in protist appearancearrow_forward19) Which of the following statements about protists is true? Group of answer choices Protists are a monophyletic group of organisms All protists are unicellular All protists are photosynthetic Some protists have prokaryotic cells The protist group known as charophytes gave rise to land plantsarrow_forwardPseudopodia are commonly found in protistans. They are often used to; Choose both that apply; Feed Move Photosynthesize Store DNAarrow_forward
- Explain the different types of gametes present in each group. Gametes are Swimming gametes > Group Chytrids Zygosporangia > Group Zygomycetes Basidia > Group Basydiomycota Asci > Group Ascomycotaarrow_forwardYou are given five test tubes, each containing an unknown protist, and your task is to read the description below and match these five protists that you know to the correct test tube. -Paramecium -Pfiesteria (dinoflagellate) -Navicula (diatom) -Plasmodium -Amoeba In test tube 1, you sketch the organism and come up with a picture that looks like the one below. You note the organism appears to be “eating” the smaller microorganism. Chemical analysis of test tube 2 indicates the presence of a chemical that is toxic to fish and humans. In test tube 3, you detect the presence of substantial amounts of silica. Microscopic analysis of organisms in tube 4 reveals the presence of an apicoplast in the organism Microscopic analysis of the contents in tube 5 reveals the presence of one large macronucleus and several small micronuclei in each organism Match the description with the correct protistarrow_forwardFill in the spaces with one of the following terms: haploid, diploid or dikaryotic: The gills of a mushroom are _______________ . When the mushroom is first formed, a basidium is _______________ . Following karyogamy, a basidium is _______________.The basidium then undergoes meiosis, which produces _______________ spores.arrow_forward
- Fill in the table Comparison between different types of sclereids present in selected specimens.arrow_forwardA) A major difference between eukaryotic cells and prokaryotic cells is that eukaryotic cells Group of answer choices exhibit little if any compartmentalization of function are generally smaller than prokaryotic cells have a large degree of internal organization lack organelles have little if any internal organization B) Which of the following statements about protists is false? Group of answer choices Some protists are mixotrophic Certain protists share a common ancestor with land plants Some protists are photosynthetic prokaryotes which are similar to the ancestral chloroplast Protists are a polyphyletic group of organisms that often bear little resemblance to each other Although most protists are unicellular, some protists are multicellular as wellarrow_forward22) Protist and fungal diseases in humans can be hard to treat because Group of answer choices protist and fungal cells contain large amounts of peptidoglycan in their cell walls protists and fungi are members of Domain Archaea and so are able to withstand toxins in their environment they have prokaryotic cells anti-protist and anti-fungal drugs don't have as much selective toxicity as anti-bacterial drugs protist and fungal cells contain R plasmids that make them resistant to drugsarrow_forward
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