Biology: Life on Earth (11th Edition)
11th Edition
ISBN: 9780134168296
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Chapter 21, Problem 3RQ
Summary Introduction
To review:
The importance of dinoflagellates in the marine ecosystem and the consequences of rapid multiplication of some species of dinoflagellates.
Introduction:
Dinoflagellates belong to the Protist group. They are the part of alveolates group of protists. They are found in the freshwater bodies as well as in the ocean. They move with the help flagella. They are important for the ecosystem of both water bodies.
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Describe the importance of dinoflagellates in marine ecosystems and the situation which can arise in
marine ecosystems when certain dinoflagellates species reproduce rapidly.
This is marine biology
a) Where do macroalgae tend to live? Middle of the ocean or continental shelf? Why?
b) What are two examples of “stiff” algae? What are they made of and what phylum do they belong to?
c) What colors do green algae use for photosynthesis? What color do they NOT use?
d) Which algal phylum is best adapted to deeper water? Why?e) Would you rather go swimming at a Japanese beach or a California beach? Explain
Why are red algae red? What distinguishes plasmodial and cellular slime molds? What are the ecological roles of protists? Why are photosynthetic protists so important to marine/aquatic ecosystems? What limits the growth of these organisms and what causes blooms? What will be affected if marine producers are disrupted?
Chapter 21 Solutions
Biology: Life on Earth (11th Edition)
Ch. 21 - 1. Which of the following statements about...Ch. 21 - Prob. 2MCCh. 21 - The organism that causes malaria belongs to which...Ch. 21 - Prob. 4MCCh. 21 - Prob. 5MCCh. 21 - Prob. 1FTBCh. 21 - Prob. 2FTBCh. 21 - 3. Protist chloroplasts surrounded by four-layer...Ch. 21 - Prob. 4FTBCh. 21 - Prob. 5FTB
Ch. 21 - Prob. 6FTBCh. 21 - List the major differences between prokaryotes and...Ch. 21 - 2. What is secondary endosymbiosis?
Ch. 21 - Prob. 3RQCh. 21 - 4. What is the major ecological role played by...Ch. 21 - Which protist group consists entirely of parasitic...Ch. 21 - Which protist groups include seaweeds?Ch. 21 - Prob. 7RQCh. 21 - Prob. 1ACCh. 21 - Prob. 2AC
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- How are diatoms and dinoflagellates used in monitoring water quality? Cite two (2) examples. What are zooxanthellae? Describe their role in symbiotic relationships.arrow_forwardHow Dinoflagellates cause red tides?arrow_forwardYou have discovered a new species aquatic protist that is a primary producer. It cannot swim on its own. It appears to be resistant to physical damage from wave action due to the presence of a glass-like wall. Which of the following organisms would this organism be most like? A) diatom B) dinoflagellate C) apicomplexan D) red algaarrow_forward
- Since diatoms are autotroph & dinoflagellates are mixotroph, how will this affect the distribution of each species in the ocean?arrow_forwardWith the aid of life-cycle diagrams, describe the different types of sexual reproduction in marine macroalgaearrow_forwardWhat is the source of carbon for fungi? What is the source of carbon for protozoa? What is the source of carbon for bacteria? What is the source of carbon for viruses? What is the source of carbon for helminths? What is the source of carbon for algea?arrow_forward
- Describe the morphological and ecological attributes of the red algae? How do they compare to dinoflagellates, diatoms, and brown algae? Are red algae found in Pennsylvania? How are they important to humans? And are they edible?arrow_forwardWhat are modes of reproduction in brown algae?arrow_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_forwardWhat is a lichen? Why is this considered an example of a parasite-host relationship? Why might you also consider it a mutualistic interaction?arrow_forwardwrite an article on Cryptosporidium a pathogenic eukaryote parasite. What is the natural habitat for this organism? (water, soil, humans, plants, etc.) What clinical significance does this organism have for humans? (What disease/infections does it cause in humans?) What is the mode of transmission to humans? (How do you get an infection with this organism?) What is the worldwide geographic distribution for this organism? (Where is it found, where have there been reported cases or outbreaks lately?)arrow_forward
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