Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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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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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.
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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…
Chapter 28 Solutions
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. 28.4 - Prob. 1CCCh. 28.4 - Prob. 2CC
Ch. 28.4 - Core Skill: Modeling The goal of this modeling...Ch. 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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- Mutualisms are interactions between two species where both participants benefit. How might the relationship between a sponge with glassy spicules and microalgae or cyanobacteria be a mutualism?arrow_forwardLichens are said to be composite organisms made up of two very different types of organisms: usually a fungus and an alga (or in a few lichens, a fungus and a Cyanobacterium). (Alga is the singular of algae.) How do these two types of organisms work together to become a functional composite organism? That is, what does each organism provides to the relationship to make it successful? Think about a lichen living on the face of a rock.arrow_forwardOman 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_forward
- 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? Explainarrow_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_forwardSharks and bony fish are classified within the phytoplankton because they are often found in the well-lit surface areas of the ocean. True Falsearrow_forward
- Zones of marine organisms can usually be seen along rocky shores. How might tidal patterns result in this sort of differential growth?arrow_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
- Coral reefs are unique, living structures. Even though they appear to be hard, rock-like structures, the soft-bodied coral animals that build the elaborate, hard, rock-like reef structures around themselves live inside. Corals are unique animals because they have photosynthetic algae that live inside their cells. This unique relationship is beneficial to the algae since it has a safe place to live inside the coral cells, and it is beneficial to the coral since the algae are producing food via photosynthesis. From the description above, what type of symbiosis is described, and at what ecological level does this relationship exist? The relationship is an example of parasitism, and it exists at the community level. The relationship is an example of mutualism, and it exists at the community level. The relationship is an example of commensalism, and it exists at the community level. The relationship is an example of mutualism, and it exists at the…arrow_forwardRuminants (like cattle) are herbivores but lack the necessary enzymes to digest cellulose from plants. Part of the digestive tract of ruminants contains a microbial community that can break down cellulose. These microbes gain energy from the plant material, and byproducts of their metabolism provide the host with a source of Carbon and energy. What type of symbiosis does this relationship describe?arrow_forwardA scientist claims that the Presence of aquaporins is in chloroplast membrane support that Endosymbiotic theory?arrow_forward
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