EBK BIOLOGY
4th Edition
ISBN: 8220102797376
Author: BROOKER
Publisher: YUZU
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Chapter 28, Problem 2COQ
Summary Introduction
To explain: The way in which a hypothesis “two macroalgae might be from different generations of the same species that have different optimal temperature” can be tested.
Introduction: A group of marine biologist discovered two new types of macroalgae. However, they hypothesized that these two discovered macroalgae belong to the same species. They stated that these macroalgae occur during a particular period of the year. This was due to their different optimal environmental conditions.
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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.
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…
The variety and sizes of algae found in the oceans are considerably greater than those of freshwater forms. Can you suggest reasons?
All of the rose-colored patches on the rock are actually encrusting coralline algae, which is a type of red algae or Rhodophyta. This algae deposits calcium carbonate in its cell walls, making it hard.
1. What type of organisms do you think eat this type of algae?
2. What role do you think this type of algae has in coral reefs and rocky shores?
3. Why do you think most red algae is typically found deeper in the ocean?
Chapter 28 Solutions
EBK BIOLOGY
Ch. 28.1 - An Introduction to Protists Core Skill:...Ch. 28.2 - Prob. 1CCCh. 28.2 - Evolution and Relationships Concept Check: How do...Ch. 28.2 - Evolution and Relationships Concept Check: How do...Ch. 28.2 - Prob. 4CCCh. 28.2 - Prob. 5CCCh. 28.3 - Prob. 1EQCh. 28.3 - Prob. 2EQCh. 28.3 - Prob. 3EQCh. 28.4 - Prob. 1CC
Ch. 28.4 - Prob. 1BCCh. 28.4 - Prob. 2CCCh. 28 - Prob. 1TYCh. 28 - Prob. 2TYCh. 28 - Prob. 3TYCh. 28 - Prob. 4TYCh. 28 - What organisms have tertiary plastids? a. certain...Ch. 28 - What is surprising about mixotrophs? a. They have...Ch. 28 - What advantages do diatoms obtain from sexual...Ch. 28 - What are extrusomes? a. hairs on flagella b....Ch. 28 - Prob. 9TYCh. 28 - Prob. 10TYCh. 28 - Prob. 1CQCh. 28 - Why have molecular biologists sequenced the...Ch. 28 - Core Concept: Science and Society Why are the...Ch. 28 - Prob. 1COQCh. 28 - Prob. 2COQ
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- Oman Observer on 3rd of August, 2020 reported "Coral reef habitat in the Sea of Oman faces an imminent threat as the fishes are adapting to extreme environmental conditions". Which group of Algae will be mostly present in coral reefs association? Select one: O a. They contain Phycoerythin pigments. O b. There are cup shaped chloroplasts in their cells. O c. Algae with hydrated silica on walls of two parts. O d. They have laminarin as storage sugars.arrow_forwardIf all of the saprophytic fungi in an ecosystem died, which of the following would be a likely short-term result? Group of answer choices Plants would not be able to absorb nutrients from the soil as effectively Dead plant material would be decomposed more quickly, releasing higher levels of CO2 Less carbon dioxide would be released into the atmosphere because dead plant material would not be decomposed Plants would be unable to absorb nitrogen as efficiently because their root symbiotic fungi would be unable to break gaseous nitrogen apart Plants would be unable to absorb nitrogen as efficiently because their root symbiotic fungi would be unable to break gaseous nitrogen apartarrow_forwardZones of marine organisms can usually be seen along rocky shores. How might tidal patterns result in this sort of differential growth?arrow_forward
- Sharks and bony fish are classified within the phytoplankton because they are often found in the well-lit surface areas of the ocean. True Falsearrow_forwardDifferent species of protist populations were measured in terms of the total volume of cells in a container. When raised alone separately on a fixed daily ration of bacteria, the populations of (a) P. aurelia and (b) P. caudatum grew rapidly until they reached their carrying capacity. Select the statements that apply to what figure C shows when the two species were grown together Popuation size (total volume of Paramecium cells) (a) (c) 200 150 100 50 9 0 L L 0 2 4 6 8 200 150 100 50 O 200 150 100 50 L 0 2 4 6 8 L 0 0 2 4 6 8 10 10 1 10 Days ● •P. aurelia 12 14 16 18 P. caudatum 1 L 1 J 12 14 16 18 P. aurelia P. caudatum P J 12 14 16 18 Relyea Ecology, 9e, 2021 W. H. Freeman anarrow_forwardScientists examined the interactions between bacteria and two species of protozoa, Uronema sp. and Euplotes sp., found in the bays and inlets of coastal California. An experiment was designed that modeled the ecosystem and measured the amount of bacteria and carbon that were ingested by the protozoal species, as shown in the data table. Bacteria with labeled glucose were incubated with these two species of protozoa. The number of bacteria, carbon ingested, and carbon exuded from the protozoa were then measured. Which of the following explains how the difference between ingested and exuded carbon relates to the energy in the aquatic ecosystem? Protozoa Bacteria Ingested (x107 l‒1h‒1) Bacterial Carbon Ingested (ngC l‒1h‒1) Exuded Bacterial Carbon (ngC l‒1h‒1) Uronema sp. 172.20 34,460 3,067 Euplotes sp. 50.82 10,170 305 The protozoa hydrolyzed the ingested carbon, resulting in an increase in energy within the ecosystem. The protozoa decomposed…arrow_forward
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