Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305073951
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 21, Problem 2CT
Summary Introduction
To explain: The reason why a lack of silica would interfere with diatom reproduction.
Concept introduction: Diatoms are single-celled algae. They have cell walls of silica. Many of the algae are planktonic and extensive fossil deposits have been found. They are a major group of microorganisms that are found in the oceans, waterways, and soils of the world.
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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.
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Chapter 21 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 21 - Multicelled haploid and diploid bodies form in...Ch. 21 - The __________ of diplomonads and parabasalids...Ch. 21 - Radiolaria and diatoms have a shell of _______. a....Ch. 21 - Prob. 4SQCh. 21 - Prob. 1DAACh. 21 - Prob. 2DAACh. 21 - Prob. 3DAACh. 21 - Prob. 4DAACh. 21 - Diatoms produce _______ that help(s) them float....Ch. 21 - Prob. 6SQ
Ch. 21 - Green algae are most closely related to _____. a....Ch. 21 - Prob. 8SQCh. 21 - Which species does not cause human disease? a....Ch. 21 - _____ is produced from red algae. a. Diatomaceous...Ch. 21 - Prob. 11SQCh. 21 - Prob. 12SQCh. 21 - Prob. 13SQCh. 21 - Prob. 14SQCh. 21 - Match each term with its most suitable...Ch. 21 - Which groups or protists would you be most likely...Ch. 21 - Prob. 2CTCh. 21 - Prob. 3CT
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- How are diatoms and dinoflagellates used in monitoring water quality? Cite two (2) examples.arrow_forwardSince diatoms are autotroph & dinoflagellates are mixotroph, how will this affect the distribution of each species in the ocean?arrow_forwardWhich of the following is least well characterized as an alga?arrow_forward
- Why are diatoms reffered to as'pearl of the ocean'?arrow_forwardRed algae have the following economical features except A production of emulsifying agent used as fertilizers C used as wrappings around sushi rolls D production of agararrow_forwardSingle-celled organisms known as diatoms have glasslike walls and are a type of algae. True Falsearrow_forward
- Name any two classes of algae in which motile cells are absent.arrow_forwardThe termite gut environment is lacking a fresh supply of oxygen O2. However, it is rich with food due to the presence of bacteria that contain enzymes capable of breaking down cellulose and lignin, the macromolecules that make wood. Use this information to determine which of following protista groups is more likely to be found in a termite gut. Diatoms Radiolaria Parabasilids O Rhodophyta O Foraminifera (Forams)arrow_forwardDescribe a green alga with a life cycle involving alternation of heteromorphic generations. Why were the two generations originally named as separate species?arrow_forward
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