Biology: Concepts and Investigations
5th Edition
ISBN: 9781260259049
Author: Hoefnagels
Publisher: MCG
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Chapter 38, Problem 9MCQ
Summary Introduction
Introduction:
Decomposers are organism that lives on dead and decaying organism by doing so they carry out the natural process of decomposition. Decomposers directly take nutrients through chemical and biological processes.
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What process brings nitrogen from the atmosphere into living system?
A. Methanogenesis
B. Denitrification
C. Anammox
D. Nitrogen fixation
E. Nitrification
Why are decomposers usually absent from food webs?
A. Decomposers do not have a feeding relationship with other organisms
B. Decomposers can operate at several different trophic levels
C. Decomposers can produce their own food
D. Decomposers can only access energy from dead organisms
When excess nitrogen and phosphorus from local farms ends up, in river and inlets, what process can occur from the addition of the fertilizers in water?
A. Acidification
B. Aquifers
C. Nitrification
D. Eutrophication
Chapter 38 Solutions
Biology: Concepts and Investigations
Ch. 38.1 - Distinguish among communities, ecosystems, and...Ch. 38.1 - Prob. 2MCCh. 38.1 - Distinguish between habitat and niche.Ch. 38.1 - Prob. 4MCCh. 38.1 - Prob. 5MCCh. 38.1 - Prob. 6MCCh. 38.1 - Prob. 7MCCh. 38.2 - Prob. 1MCCh. 38.2 - Prob. 2MCCh. 38.2 - Prob. 3MC
Ch. 38.2 - Prob. 4MCCh. 38.3 - Identify the trophic levels of a food chain.Ch. 38.3 - Prob. 2MCCh. 38.3 - Prob. 3MCCh. 38.3 - Prob. 4MCCh. 38.3 - Prob. 5MCCh. 38.3 - Prob. 6MCCh. 38.4 - Prob. 1MCCh. 38.4 - Prob. 2MCCh. 38.4 - Prob. 3MCCh. 38.4 - Prob. 4MCCh. 38.4 - Prob. 5MCCh. 38.5 - Prob. 1MCCh. 38.5 - Prob. 2MCCh. 38 - Prob. 1MCQCh. 38 - Cyanobacteria are photosynthetic bacteria that...Ch. 38 - Prob. 3MCQCh. 38 - Prob. 4MCQCh. 38 - A large tree falls over in an old-growth forest,...Ch. 38 - Prob. 6MCQCh. 38 - In a prairie, which trophic level should have the...Ch. 38 - Prob. 8MCQCh. 38 - Prob. 9MCQCh. 38 - Prob. 1WIOCh. 38 - Prob. 2WIOCh. 38 - Prob. 3WIOCh. 38 - Prob. 4WIOCh. 38 - Prob. 5WIOCh. 38 - Prob. 6WIOCh. 38 - Prob. 7WIOCh. 38 - Prob. 8WIOCh. 38 - Prob. 9WIOCh. 38 - 1. Review the definitions of ecology, populations,...Ch. 38 - Prob. 2PIT
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- Due to what food supply has increased during green revolution? A. Use of Chemicals B. Use of biochemicals C. Use of phytochemicals D. Use of Agrochemicalsarrow_forwardHow would loss of fungi in a forest effect biogeochemical cycles in the area? a. Nitrogen could no longer be fixed into organic molecules. b. Phosphorus stores would be released for use by other organisms. c. Sulfur release from eroding rocks would cease. d. Carbon would accumulate in dead organic matter and waste.arrow_forwardWhich essential chemical must be “fixed” by soil-dwelling bacteria before it can enter the food chain? a. Carbon b. Nitrogen c. Phosphorous d. Both a. and b.arrow_forward
- Which of the following is a process of the nitrogen cycle that involves the conversion of nitrogen gas to ammonia? a.Nitrogen fixation b.Nitrification c.Ammonification d.Denitrificationarrow_forwardWhat group of organisms make their own food? A. Autotrophs B. Producers C. Phototrophs D. All of the options are correct.arrow_forwardHow can primary sewage treatment be used as a source of biofuel? a.Fermentation of BOD allows ethanol to be produced b.After primary treatment, the water is clean enough to use for hydrogen fuel c.Lipids that collect on the surface can be collected for biodiesel d.The trickling filters captures sludge that can be used for hydrogen fuelarrow_forward
- This picture likely depicts a city that likely suffers from all of the criteria air pollutants, but which is the one most visible here? a. nitrogen oxide b. sulfur dioxide c. ozone d. carbon monoxidearrow_forwardWhich trophic level is vital to the continuation of the carbon cycle? Group of answer choices a. tertiary consumer b. secondary consumer c. producer d. primary consumerarrow_forwardNitrogen is fixed in ecosystems in ways stated below. Which one of the statements below is false? A. By cyanobacteria B. By electrical discharges in the atmosphere C. By industrially synthesised fertilizer D. By denitrificationarrow_forward
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