Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
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Chapter 26, Problem 4Q
Summary Introduction
To review:
Another example of convergent evolution in protists but outside alveolates.
Introduction:
Convergent evolution is defined as the process whereby unrelated or distantly related organisms evolve independently and possess similar traits as a result of adaptation influenced by certain environmental factors. Such organisms do not have any common ancestor but they may have some resembling characteristics features with respect to each other.
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Which of the following protist exhibit the discoid type of mitochondrial cristae?
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Chapter 26 Solutions
Life: The Science of Biology
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- Characteristics properties of this taxon include hyphae a. Protist b. Monerans c. Plants d. Archeanarrow_forwardSelect all statements that are true about the kindom protista: I. They are mostly unicellular Eukaryotes II. Protists are the most nutrionally diverse of all eukaryotes III. Red algae and green algae are included in this kingdom IV. All protist are multicellular in naturearrow_forwardThe internal structure of many protists is much more complexthan that of cells of multicellular organisms. Does thismean that the protist is engaged in more complex activitiesthan the multicellular organism is? If not, why are protistancells more complicated?arrow_forward
- If an ancestral protist was classified as an opisthokont, then what should be true of this protist? -They should also have given rise to the plants. -They should perform heterotrophy by secretion of exoenzymes. -Like diplomonads and parabasalids, they should bear multiple flagella. -They should be parasitic -They should be the common ancestor of the basidiomycetes and animals.arrow_forwardWhich clade does not have protists as members? Chromalveolata Excavata Unikonta Archaeplastida none of these are correctarrow_forwardDinoflagellates are unicellular, marine protists. Dinoflagellates are bioluminescent, but only at night. During the day, they carry out photosynthesis similar to other autotrophs. At night, however, they bioluminesce every time they are disturbed. They are often seen in the wakes of ships at night. While the reason for this bioluminescence is not fully understood, many scientists concur that it is a form of self-defense. If small fish begin to feed upon the protists, the protists will begin to bioluminesce. These flashes of light in the dark water can alert larger fish and draw them towards the small fish, upon which they prey. By making the small fish vulnerable, the dinoflagellates are able to protect themselves. Based on the information above, a researcher decides to design an experiment in which she is testing how long it takes for dinoflagellates to recover after different amounts of disturbance. She maintains 10 containers of dinoflagellates with similar temperature, salinity and…arrow_forward
- Dinoflagellates are unicellular, marine protists. Dinoflagellates are bioluminescent, but only at night. During the day, they carry out photosynthesis similar to other autotrophs. At night, however, they bioluminesce every time they are disturbed. They are often seen in the wakes of ships at night. While the reason for this bioluminescence is not fully understood, many scientists concur that it is a form of self-defense. If small fish begin to feed upon the protists, the protists will begin to bioluminesce. These flashes of light in the dark water can alert larger fish and draw them towards the small fish, upon which they prey. By making the small fish vulnerable, the dinoflagellates are able to protect themselves. Based on the information above, a researcher decides to design an experiment in which she is testing how long it takes for dinoflagellates to recover after different amounts of disturbance. She maintains 10 containers of dinoflagellates with similar temperature, salinity and…arrow_forwardTrue or False: 16. Kingdom Discicristatae are amitochondriate 17. The presence of contractile vacuole in Euglena indicate that these organisms are aquatic protist 18. Most diplomonads and parabasalids are found in anaerobic environmentsarrow_forwardCiliatesa. move by pseudopods.b. are not as varied as other protists.c. feed and move using cilia.d. do not divide by binary fission.e. are closely related to the radiolarians.arrow_forward
- 1. How is designated the ancestral protist lineage that gives origin to the metazoans? 2. Layout that protist lineage (inform the names of the structures) 3. Wich big philo of metazoa is most related to this protist lineage? 4. What is the main sinapomorphy of this meathozary group? 5. How can the relationship be morphologically proven to the ancestral protist lineage? 6. The feeding of the basal metazoan has characteristics considered plesiomorphic. Indicate the food habit and digestion process of the basal metazoan (I'm sorry, i don't speak english very well)arrow_forwardMatch each protist with its most suitable description. ____ diplomonad a. whirling cell ____ water mold b. silica-shelled producer ____ dinoflagellate c. grows as filaments ____ diatom d. anaerobic parasite ____ amoeba e. closest relative of plants ____ red alga f. closest relative of animals ____ choanoflagellate g. contains phycobilins ____ charophyte alga h. feeds using pseudopodsarrow_forwardApicomplexans evolved from a photosynthetic ancestor and have the remnant of a chloroplast. This organelle no longer acts in photosynthesis, but remains essential to the protist. Why might targeting this organelle yield an antimalarial drug with minimal side effects in humans?arrow_forward
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