52) Nitrifying bacteria participate in the nitrogen cycle mainly by ________. C) Heat produced by cellular respiration is used by heterotrophs for thermoregulation. Production increases correspond to periods of ice thickening increases in the fall, while there is still significant sunlight. A herbivore is this. (a) Animals. Primary producers are the foundation of an ecosystem. a. Heterotrophs b. B) primary productivity A) only I Hydrothermal micro-organisms thrive in the waters around chimneys or black smokers that form from the iron sulfide deposits left by hydrothermal vents on the ocean floor. Net primary production 2. C) C For this reason, bacterial colonies in some limestone caves are chemoautotrophic, also known as rock eating. These bacteria, like those in the ocean depths, get their necessary nourishment from the nitrogen, sulfur or iron compounds found in or on the surface of rocks that have been carried there by water seeping through the porous surface. a. a green algal protist b. a choanoflagellate c. an amoeboid protist d. a slime mold, Nonliving microbes a. Animalia b. Bacteria c. Viruses d. Protista e. Fungi f. None of the above. C) Completing pre-licensing training. potassium. Organisms in all trophic levels above the primary producers are called. C) internal nitrogen cycling in the oceans In my new hybrid role, I am the sole producer of volleyball home events, in addition to co-producing both men's and women's basketball games. Explanation: Only primary consumers can function as a herbivores. (E) Energy transfer between trophic levels is usually less than 20 percent efficient. Therefore, they for the base of any food chain. 37) Which of the following is primarily responsible for limiting the number of trophic levels in most ecosystems? A) Humus is composed of inorganic nutrients, and organic matter is composed only of organic matter. Carnivores eat only animals, but omnivores eat . In a food web nutrients are recycled in the end by decomposers. Nitrogen is the limiting nutrient when considering global primary production. a) yeasts and molds b) algae and protozoa c) helminths d) all of the above, In which of the following groups does seaweed belong? 29) Which of the following ecosystems would likely have the largest net primary productivity per hectare and why? A. First-order heterotrophs B. Third-order heterotrophs C. Producers D. None of the Above, What is another term for autotroph? Primary producers are vital to the survival of an ecosystem. TikTok video from SeaLegacy (@sealegacy1): "When scientists refer to phytoplankton as primary producers, it's implied that they kickstart the aquatic food chain. Producers c. Cyanobacteria d. Algae e. Autotrophs, Photosynthetic organisms are found in which domain: a. Archaea b. Bacteria c. Eukarya d. a and b e. b and c, Eukaryotic, multicellular organisms such as mammals a. Animalia b. Bacteria c. Viruses d. Protista e. Fungi f. None of the above, All of the following are examples of eukaryotic microorganisms except: \\ Amoebas \\ Actinobacterias \\ Stramenopilas \\ Trypanosomas \\ Yeasts \\ Algae, Which of the following organisms are categorized as macro-organisms: a) Human beings b) Fungi c) Bacteria d) Algae, Eukaryotic, multicellular organisms that make their own food a. Animalia b. Bacteria c. Viruses d. Protista e. Fungi f. None of the above. Which of the following statements regarding this flow of energy is true? A) biome The remains of plants and animals that is consumed by detritivores is called ___. They are both heterotrophic. If the most advanced organisms are multicellular, what would be the adv. B) Predators have relatively large population sizes. I. increases in human population (D) It is eliminated as feces or is dissipated into space as heat, consistent with the second law of thermodynamics. A harmful algal bloom is fast-growing and affects animal, human and environmental health. I. industrially produced fertilizers D) Nutrient cycling rates tend to be limited by decomposition. A) only I and III I. Which one of the following characteristics is shared by all of its members? View the full answer. |--|--|--| Three former Rust crew members have filed a new lawsuit against Alec Baldwin and the film's producers, claiming they failed to follow safety rules. Which of the following describes how matter moves between producers, consumers, and decomposers in an ecosystem. C) chemoautotrophic bacteria. B) animals. They use the chemical energy found in the minerals of the hot spring to create hydrogen sulfide. I. terrestrial ecosystems Detritus can be consumed by which of the following primary decomposers? C) only III Our goal is to make science relevant and fun for everyone. Final answer: Decomposers are the largest population in a food chain. primary productivity, in ecology, the rate at which energy is converted to organic substances by photosynthetic producers (photoautotrophs), which obtain energy and nutrients by harnessing sunlight, and chemosynthetic producers (chemoautotrophs), which obtain chemical energy through oxidation. 52) Primary producers support the primary consumers in an ecosystem. Although few species of phytoplankton produce these toxins, even beneficial phytoplankton can be damaging. 31) Which one of the following correctly ranks these organisms in order from lowest to highest percent in production efficiency? Which of the following is a producer? Bacteria 3. a. bacteria b. archaea c. protists d. fungi e. plants f. animals. E) only I and II, Nitrogen is available to plants mostly in the form of ________. D) wetlands, Considering its total area covered, which ecosystem type represented in the figure has a very low level of economic impact on Earth's ecosystem, assuming that NPP is positively correlated C) fossilized plant and animal remains (coal, oil, and natural gas) The number of trophic levels is typically limited to four or five. a. c. romaine lettuce (Kingdom Plantae) d. portobello mushroom (Kingdom Fungi) e. sea sponge (Kingdom Animalia). producers, primary consumers, and decomposers, producers, primary consumers, secondary consumers, top carnivores, and decomposers. The measures of net primary production (NPP) and net ecosystem production (NEP) both can be used to quantify gross primary production (GPP). Select all of the following that describe the primary production of an ecosystem. 32) Owls eat rats, mice, shrews, and small birds. C) Productivity increases with available sunlight. E) Australia, In the accompanying figure, which of these countries has the highest total CO2 emissions? Which of the following provides the strongest evidence for the conservation of tool-kit genes? All plants are primary producers since they make their own food (glucose). Secondary consumers Decomposers Primary consumers Producer Get the answers you need, now! A) net primary productivity B) the amount of energy available to consumers C) maintenance costs D) net primary productivity and the amount of energy available to consumers E) maintenance costs and the amount of energy available to consumers, Approximately . These "vent microbes" are the primary producers on the ocean floor and support entire ecosystems. 34) How does inefficient transfer of energy among trophic levels result in the typically high endangerment status of many top-level predators? Answer: Primary consumers. D) global warming All members of the kingdom ________ are heterotrophic. E) 60 percent. Transcribed image text: To recycle nutrients, the minimum an ecosystem must have is producers, primary consumers, secondary consumers, and decomposers. If the flow of energy in an arctic ecosystem goes through a simple food chain, perhaps involving humans, starting from phytoplankton to zooplankton to fish to seals to polar bears, The accompanying figure represents net primary productivity organized by ________. D) Only a small portion of the energy captured by producers is transferred to consumers. The melting of sea ice in the spring along with the increased availability of sunlight triggers algae production in the Arctic region. For example, if 1,000 kilocalories of energy are present at the primary producer level, one-tenth of this energy (about 100 kilocalories) is passed to the primary consumers in the next level. C) tropical seasonal forest Study with Quizlet and memorize flashcards containing terms like When primary producers expend energy to build new tissue, this is ________. D) fungi exhibit absorptive nutrition. B) <1C B) Decomposers compete with higher-order consumers for nutrients and energy. a. Protista b. Primary production is the production of chemical energy in organic compounds by living organisms.The main source of this energy is sunlight but a minute fraction of primary production is driven by lithotrophic organisms using the chemical energy of inorganic molecules.. Chemosynthesis is one alternative to photosynthesis that primary producers have. In some cases these nutrients are then stored and only released slowly in anticipation of the next rain event. 30 seconds. Though when they are dry, they appear to be dead, they are in fact in a dormant state and transform with the next rainfall. $\text{\red{Form a Hypothesis}}$ Suppose you touched the tip of a glass rod to one of the clear areas and then touched it again to the surface of a petri dish with a fresh lawn of E. coli. A) rate of decomposition of detritus The statement 'around 10% of the energy is transferred to support the next trophic level' best explains why there are fewer secondary consumers than producers.. A trophic level can be defined as the position that occupies given groups of organisms in a food web. Why are food chains relatively short? If a field contains approximately 1,000 kilocalories of energy in grass, which is eaten by crickets, which are eaten by birds, then approximately how many kilocalories of energy could be in the birds that live in this field? You own 300 acres of patchy temperate forest. It is a way of classifying animals, plants, and fungi that eat other organisms in order to survive. They take nutrients from organic matter left in the soil by decomposers and transform them into food for themselves and other organisms. List the other elements in the group. answer choices. Determine the percent of sodium nitrate in the original sample. Assume that, over a period of time, an owl consumes 5,000 J of animal material. Next rank the relative concentration of DDE in each plant/animal using the following scale: 1 = lowest concentration - 10 = highest concentration. Primary producers are those organisms that can synthesize their own food using carbon dioxide and water in the presence of sunlight ( photosynthesis). answer choices. Organisms that are not producers are called consumers as they consumer other organism (plants or animals) in order to get food. a. secondary consumers b. tertiary consumers c. primary producers d. primary consumers e. secondary producer; Humans are _____. A) Rhizobium bacteria a. Protists b. Archaea c. Kingdom Animalia d. Kingdom Plantae, What are eukaryotic, multicellular organisms such as mushrooms called? B) conversion of grasslands and forests into agricultural fields 3) To recycle nutrients, an ecosystem must have, at a minimum, ________. a. Eukaryote b. Prokaryote c. Fungal d. Plantae, Which of the following is an example of a group of prokaryotic organisms? Life on the tundra is much the same as that in an arid desert. Organisms at the top of the chain eventually die and are then consumed by decomposers, which fix the nitrogen levels and provide the organic material necessary for the next generation of primary producers. Study with Quizlet and memorize flashcards containing terms like When you eat an apple, you are serving as a _____. About how much of the chemical energy fixed by photosynthesis of the grass (100 percent) is available to the hawk? In order to complete the food chain, they also offer food for primary consumers, secondary consumers, and apex predators (also known as tertiary consumers). C) region The major role of detritivores in ecosystems is to. II. 9) Use the following figure to answer the question. 900 seconds. 3b. This is necessary to sustain life as the species' populations get smaller as you go further up the food chain. There is a maximum of three to four trophic levels in a food chain. E) 0C, The shift in the peak of caterpillar season is most likely due to ________. 47) Use the following figure to answer the question. B) eukaryotic. (a) Bacteria (b) Archaea (c) Fungi (d) Helminths (e) Protozoa. c. They are both prokaryotic. Why does a vegetarian leave a smaller ecological footprint than a person who eats meat? B) only II Amount of energy available to primary consumers All of the following are organisms within the domain eukarya with one exception.Select the exception. D) chlamydiae. The law of conservation of mass states that matter cannot be created, yet matter is sometimes gained or lost to an ecosystem. D) fungi. A) Top-level predators are destined to have small populations that are sparsely distributed. B) 1C Chemoautotrophic prokaryotes near deep-sea vents are primary producers. B. green algae and horsetails. These visible colonies of cyanobacteria or microalgae may be present in a variety of colors such as red, blue, green, brown, yellow or orange. Eating meat is an inefficient way to utilize autotrophic productivity. Which of the following locations is the largest reservoir for carbon in the carbon cycle? C) only I, II, and IV A) I only C) only I, II, and IV d. Pathogens of plants and animals. Which of the following locations is the main reservoir for nitrogen in the nitrogen cycle? Essential Duties and Responsibilities: Following is a summary of the essential functions . Gross primary production in aquatic ecosystems is most likely to be limited by decreases in which of the following nutrient pairs? She can be found at www.kimberlyyavorski.com. A) pesticide use Finally, answer the five questions following the food web diagram. animals cannot produce their own food. III. E) Energy transfer between trophic levels is usually less than 20 percent efficient. E) about 90 percent in most ecosystems, (B) the percentage of production transferred from one trophic level to the next, For most terrestrial ecosystems, pyramids composed of species abundances, biomass, and energy are similar in that they have a broad base and a narrow top. of anatomy and physiology? Why is net primary production (NPP) a more useful measurement to an ecosystem ecologist than gross primary production (GPP)? B) Acrasiomycota. What is the reason for this seeming contradiction? Respond to the following statements Respond to the following statements with reference to the five trophic categories listed below. (E) Fish can potentially provide more food for humans than seal meat. They also occur in brackish waters. B) rock, sand, and ice To recycle nutrients, an ecosystem must have, at a minimum. D) Germany However, some Protists, and all Fungi, Plants, and Animals are multicellular. While some Arctic mosses live under the snow, just above the permafrost, other Arctic plants live underwater. 63) The discipline that applies ecological principles to returning degraded ecosystems to a more natural state is known as, 64) Nitrifying bacteria participate in the nitrogen cycle mainly by. A. Eukarya B. Bacteria C. Archaea D. Plants and animals are in different domains E. Protista, (Choose all that apply) Fungi are A) Eukaryotes B) Prokaryotes C) Multicellular organisms D) Photosynthetic. A) secondary consumers and top carnivores require less energy than producers D) It is eliminated as feces or is dissipated into space as heat, consistent with the second law of thermodynamics. Which of the following is most correct regarding the activity of detritivores? Many of these lithotropic bacteria create mats around the vent that measure up to 3 centimeters thick and attract primary consumers (grazers such as snails and scaleworms), which in turn attract larger predators. Primary producers are vital to the survival of an ecosystem. E) Food-chain length is ultimately determined by the photosynthetic efficiency of producers. E) I, II, III, and IV, Global warming refers to ________. also eat any number of primary consumers or producers. Analysts at Deutsche Bank raised their target price on Associated British Foods from 2,180.0p to 2,300.0p on Tuesday, stating its Primark unit had driven "another upgrade". D) The answer is most likely a combination of the other responses. a primary consumers. Plantae B.) Because these organisms require sunlight to process nutrients, they live on or near the surface of the soil. B) nitrogen lost to the atmosphere Primary Purpose: Lead the producer and senior leader recruiting strategy in an ongoing effort to discover and acquire top-tier talent. Biology questions and answers. D) increases in irrigated agriculture, (C) increased processing of salt water to freshwater, Consider the global nitrogen cycle depicted in the accompanying figure. D) only II, III, and IV C) algal beds and reefs plus the ocean neritic zone D) Obtaining a bachelor's degree. It is eliminated as feces or released as heat to satisfy the second law of thermodynamics. Interpreting Diagrams Which diagrams represent a single element? Primary producers are a basic part of an ecosystem. The genes shows independent assortment. B) 0.1 percent With the exception of the ________, the following kingdoms are placed within the domain Eukarya. Which of the following statements is most correct regarding the terminology used in trophic cycles? (a) Fungi (b) Plantae (c) Bacteria (d) Protista. Along with decomposers, they make up the base of a food web and together their populations number more than any other part of the web. II. It also provide almost all earth's oxygen and supply food for marine ecosystems. Organisms that must rely on complex, high-energy molecules produced by other organisms for survival are. What is the limiting portion of the cycle for plants? A) 0.01 percent What is the approximate production efficiency of this animal? D) glaciers A) typically 10 times lower in a clear-cut watershed See Page 1. 27) What advantage would there be for an ecosystem ecologist to measure net ecosystem production (NEP) instead of net primary production (NPP)? 62) Which of these ecosystems has the lowest net primary production per square meter? 14) Use the following figure to answer the question. A) I B. primary producers. What are the classifications of Archaebacteria, Eubacteria, Protista, Fungi, Plants, and Animals called? A) industrial nitrogen fixation There, phytoplankton take carbon dioxide and water from their surroundings, and they can use energy from the sun to create carbohydrates through the process known as photosynthesis. Which of the following consume other living organisms? 54) Why do logged tropical rain forest soils typically have nutrient-poor soils? (a) autotrophic (b) eukaryotic (c) heterotrophic (d) symbiosis (e) decomposers. What is the estimated age of this sample? 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