Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Textbook Question
Chapter 21, Problem 3RQ
what is the importance of dinoflagellates in marine ecosystem? What can happen to marine ecosystems when certain dinoflagellate species reproduce rapidly?
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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?
What is the role that diatoms, dinoflagellates, and green algae play in marine and fresh water ecosystems?
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
Chapter 21 Solutions
Biology
Ch. 21.1 - What do biologists mean when they say that sex and...Ch. 21.1 - define protist and describe the various ways in...Ch. 21.1 - describe a scenario for the evolutionary origin of...Ch. 21.1 - describe the major effects of protists on people...Ch. 21.2 - Prob. 1TCCh. 21.2 - Just as the invasive Cauterpa seaweed often...Ch. 21.2 - If you like sushi, youve probably eaten a sushi...Ch. 21.2 - list the major protist taxonomic groups and the...Ch. 21.2 - describe some examples of how members of each...Ch. 21.2 - Is it important to stop the spread of Caulerpa?...
Ch. 21 - Which of the following statements about protists...Ch. 21 - The harmful protist blooms known as red tides are...Ch. 21 - The organism that causes malaria belongs to which...Ch. 21 - The finger-like extensions of the cell membrane...Ch. 21 - Prob. 5MCCh. 21 - Prob. 1FIBCh. 21 - Prob. 2FIBCh. 21 - Protist chloroplasts surrounded by four-layer...Ch. 21 - Prob. 4FIBCh. 21 - Prob. 5FIBCh. 21 - Prob. 6FIBCh. 21 - List the major differences between prokaryotes and...Ch. 21 - What is secondary endosymbiosis?Ch. 21 - what is the importance of dinoflagellates in...Ch. 21 - 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 - Which protist groups include species that use...Ch. 21 - The internal structure of many protists is much...Ch. 21 - What are some important benefits and services...
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- How 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_forwardHow are diatoms and dinoflagellates used in monitoring water quality? Cite two (2) examples. What are zooxanthellae? Describe their role in symbiotic relationships.arrow_forward
- Since diatoms are autotroph & dinoflagellates are mixotroph, how will this affect the distribution of each species in the ocean?arrow_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_forwardWith the aid of life-cycle diagrams, describe the different types of sexual reproduction in marine macroalgaearrow_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_forwardWhich groups of algae produce the following important products: (1) agar, (2) algin, (3) nerve poisons, (4) abrasives for polishes?arrow_forwardWhat are modes of reproduction in brown algae?arrow_forward
- Which of the following is true about Heterocysts? Choose all possible answers. Are the sites of nitrogen fixation in cyanobacteria are surrounded by a thickened cell wall that slows the diffusion of O2 into the cell and lack photosystem II fluoresce as strongly as vegetative cells are able to fix CO2 have intercellular connections with adjacent vegetative cells that allow for mutualarrow_forwardCool water, or "deep water" reefs tend to be built by... a) Photosynthetic corals O b) Non-photosynthetic corals O c) Chemosynthetic bacteria O d) Mermaidsarrow_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
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