Concept explainers
The source of the necessary elements of life is
- a. an inorganic environmental reservoir.
- b. the sun.
- c. rocks.
- d. the air.
Introduction:
The essential elements are acquired by all living beings in their basic forms as nutrients from their inorganic reservoirs in the environment. These reservoirs of elements are constantly recycled by the organisms, so they are a permanent source of elements. The compounds found in these reservoirs can contain more than one element.
Answer to Problem 1MCQ
Correct answer:
The source of essential elements of lifeis an inorganic environmental reservoir. Therefore, option (a) is correct.
Option (a) is given as “An inorganic environmental reservoir”.
Explanation of Solution
Justify reasons for the correct statement:
An organic environment reservoirisa permanent source of elements.
Hence, option (a) is correct.
Justify reasons for the incorrect statements:
Option (b) is given as “the sun”.
Sun is the ultimate source of energy. Hence, it is a wrong answer.
Option (c) is given as “rocks”.
Rocks are the reservoir of minerals. Hence, it is a wrong answer.
Option (d) is given as “the air”.
Air is the source of essential gases required for survival like oxygen. Hence, it is a wrong answer.
Hence, options (b),(c), and(d) are incorrect.
The inorganic environmental reservoirs are the only source of essential elements that are acquired by living beings in the form of nutrients. Sun, air,and rocks are not the sources of these elements.
Want to see more full solutions like this?
Chapter 7 Solutions
Microbiology: A Systems Approach
- An ecosystem thrives with biotic and abiotic component parts. An example of an abiotic part of an ecosystem is ... a.minerals b.fungus c.decaying plants d.micro-bacteriaarrow_forwardPhosphorus is a mined, nonrenewable resource and comes from phosphate rock. It is second only to Nitrogen as to the amount used by plants. List 3 functions in organisms (plants & animals).arrow_forwardWhat is the ecosystem composed of? a.)soil, water and weather b.)community of organisms c.)energy d.)all of the abovearrow_forward
- An ecosystem is made up of plants, animals and microbes on one hand and air, water and mineral soil on the other hand. Discuss how these factors are connected to form the ecosystem.arrow_forwardWhich of the following items could not be used as food by living organisms? A. Twinkies B. Mushrooms C. Aluminum D. Leavesarrow_forwardAn ecological system, or ecosystem, encompasses a. biotic and abiotic factors. b. abiotic factors onlly. c. biotic factors only. d. only land.arrow_forward
- Which of the following does not vary predictably with the depth of the aquatic environment? a. dissolved oxygen c. penetration by sunlight b. temperature d. salinityarrow_forwardTheterrestrial ecosystems with highest primary production are usually those thatare:a. warmand wet.b.warm and dry.c.cool and wet.d.cool and dry.e.intermediate in both temperature and moisture.arrow_forwardScience Name: Date: Class: Range of Tolerance Data Analysis One of the responsibilities of an aquatic biologist is to make sure that the abiotic factors stay wiumh the acceptable ranges for the optimal help for the Species within the local ecosystem. Bcologists, including aquatic biologists, use the range of tolerance to monitor the number of different populations residing in the area. m order to do so they use statistical models. Create a graph displaying on the x-axis the ranges of abiotic conditions such as temperature to study the population of rainbow trout in the area ( use the launch model as an example), Label each interval with temperature range and condition. What Causing Stress in Rainbow Trout Population The optimal range is the amount of an abiotic factor that produces the highest possible population. For water temperature, this would be about 6-10°C. Label this area on the graph. 1. 2. The zone of physiologic stress occurs when an abiotic factor exists at levels that are…arrow_forward
- explain briefly how these components interact. Biotic - animals,Birds,Plants,Fungi,Organisms Abiotic - Water,Air,Soil,Sunlight,Mineralsarrow_forwardEcology is the study of the interaction of organisms A. with the atmosphere. B. with each other. C. with their communities. D. with each other and their physical environment.arrow_forwardWhich of the following is True about ocean ecosystems?a. Surface waters typically have abundant sunlight but lowlevels of nutrients.b. Because there isn’t enough sunlight for photosynthesis,deep waters typically have no life.c. Surface waters in the open ocean have the highestproductivity.d. Life near hydrothermal vents relies on photosynthesisfor energy.arrow_forward
- Basic Clinical Lab Competencies for Respiratory C...NursingISBN:9781285244662Author:WhitePublisher:Cengage