Gen Combo Ll Biology; Connect W/learnsmart Labs Access Card
4th Edition
ISBN: 9781259853197
Author: Robert Brooker
Publisher: MCGRAW-HILL HIGHER EDUCATION
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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…
Which of the following is NOT one of the roles of algae in nature?
O a. Petroleum is the fossil remains of planktonic algae.
O b. Algae are the primary producers in the aquatic food chain.
O c. Planktonic algae produces carbon dioxide as by-product of their
photosynthesis.
O d. Unicellular algae are symbionts of Tridacna.
In a shallow coastal ecosystem dominated by seagrasses, nutrient limit primary production under low nutrient ( oligrtropihc) conditions while light becomes the limiting factor under high nutrient ( eutrophic) condition. In the conceptual model given explain why sea grasses, macroalgae and poluplantkon are in the position of the graph. Kindly explain your answer
Chapter 28 Solutions
Gen Combo Ll Biology; Connect W/learnsmart Labs Access Card
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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- At a global scale, harmful algal blooms (HABS) are appearing in many places, often new places, and lasting longer than previously recorded. Across Florida, the occurrence of algal blooms, caused by various species of phytoplankton, has been intensifying. In the summer of 2016, a state of emergency was declared because a toxic cyanobacterial bloom occurred in Lake Okeechobee which spread into and throughout the St. Lucie River and Estuary. Water samples collected during the bloom helped identify a limiting nutrient. 1. Data from a Burger et al. (2004) indicate that mercury levels in Florida gar, top-level predators, from Lake Okeechobee were not higher than mercury levels of fish muscle from other locations in the United States. However, mercury levels in the livers of Florida gar were above the level considered safe for human consumption. a. Explain why this is good news for people who fish in Lake Okeechobee. b. Explain why this is bad news for non-human consumers of fish, and how it…arrow_forwardA group of environmentalists is studying the effects of recent commercial zoning to wildlife acreage on the biodiversity of a rural county. The group noted a steady decline in the population of animals, while bacteria and other protists remained constant. Which statement best discusses the reasons for the steady decline of animals as opposed to the protists? A. Bacterial growth is usually not affected by environmental changes because of asexual reproduction. B. The animals could not adapt to the new environment. C. Bacteria lived in areas that were not affected by the zoning D. The animals became susceptible to human and environmental harm.arrow_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_forwarda- Removing live acorn barnacles stimulated the growth of macroalgae b- macroalgae dominated the occupation of the surface of rocks after four years and their success was greatly increased relative to controls when both barnacle species were removed. c- acorn barnacle shells facilitate algal density on rocks d- acorn barnacles increase there coverage of rocks when little brown barnacles reach their highest density and seem to replace little brown barnacles on the rock during 1985arrow_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_forward
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