Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Chapter 46.4, Problem 1TYK
Summary Introduction
Introduction:
Chemical elements, such as nitrogen and carbon flow in a cycle. They move from the physical environment to the organisms’ body and then back to the environment, from the cycle started. To transport the chemicals in the ecosystem, biogeochemical cycles are involved in the process.
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Net primary productivity refers to
the rate of energy storage as organic matter by autotrophs after respiration is deducted
the total rate of photosynthesis, or energy assimilated, by autotrophs
the amount of accumulated organic matter found in an area at a given time
the production of new tissues and offspring by heterotrophs
A class is studying the tropic levels of an ecosystem. The pyramid of biomass shown is a model of these trophic levels. Which of the following is the best explanation of the available energy at each of the trophic levels in this ecosystem ?
ANSWER CHOICES ARE IN THE PHOTO. thanks.
In the trophic structure, autotrophs are living organisms that:
Are at the top of the chain, referred to as tertiary producers.
Photosynthetic organisms that produce their own energy
Organisms that receive their energy by consuming producers such as plants
Help to decompose the remains of dead organisms
Chapter 46 Solutions
Principles of Biology
Ch. 46.1 - If the population pyramid in (a) was inverted,...Ch. 46.1 - Prob. 2CCCh. 46.1 - Prob. 1TYKCh. 46.1 - The total fertility rate is highest in Latin...Ch. 46.2 - Prob. 1CCCh. 46.2 - Prob. 1TYKCh. 46.2 - Prob. 2TYKCh. 46.3 - Prob. 1CCCh. 46.3 - Prob. 1BCCh. 46.3 - Prob. 1TYK
Ch. 46.3 - Prob. 2TYKCh. 46.4 - Prob. 1TYKCh. 46.5 - Prob. 1TYKCh. 46.6 - Prob. 1TYKCh. 46.6 - Prob. 2TYKCh. 46.7 - Prob. 1BCCh. 46.7 - Prob. 2BCCh. 46.7 - Prob. 1TYKCh. 46.7 - Prob. 2TYKCh. 46 - Prob. 1TYCh. 46 - Prob. 2TYCh. 46 - Prob. 3TYCh. 46 - Prob. 4TYCh. 46 - Prob. 5TYCh. 46 - Prob. 6TYCh. 46 - Prob. 7TYCh. 46 - Prob. 8TYCh. 46 - Prob. 9TYCh. 46 - Prob. 10TYCh. 46 - Prob. 1CCQCh. 46 - Prob. 2CCQCh. 46 - Prob. 3CCQCh. 46 - Prob. 1CBQCh. 46 - Prob. 2CBQ
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- Flow of energy through various trophic levels in an ecosystem is unidirectional and non-cyclic.Explain.arrow_forwardAs a general rule, for each jump up in trophic level, about how much does the available energy drop? Group of answer choices practically 100 percent 90 percent 10 percent 30 percent 50 percentarrow_forwardThe Law of 10 determines all the following characteristics except one. Which one characteristic does the Law of 10 NOT determine? Group of answer choices The abundance of individuals at various trophic levels The amount of energy stored in the combined biomass of various trophic levels The combined mass of individuals at various trophic levels The length of food chains The number of species at various trophic levelsarrow_forward
- The pattern of recovery in a community after a disturbance is called ___________________. biogeochemical cycling a trophic cascade ecological succession the trophic structurearrow_forwardHypothetical balanced food chain. The Sun and Earth supply 6 units of energy to each plant. For higher trophic levels, individuals consume 2 units of energy each before passing the remainder to the next trophic level. The number of individuals in each trophic level is given below. Complete the table below by computing the number of energy units in each columnarrow_forwardAmong the biotic components of the ecosystem, the producer system is ? Sea Rivers Green Plants Animalsarrow_forward
- Which of the following statements about biotic potential is TRUE? Biotic potential of an organism is determined by how they interact with the environment. Increase in food supply increases the biotic potential of an organism. If an organism has higher rate of reproduction, it has higher biotic potential. Small organisms have low biotic potential because of their size.arrow_forwardHabitat components are of two types, abiotic and biotic. List several components of each type.arrow_forwardAn organism exists for long periods by using only CO2 and H2O. herbivore. carnivore. decomposer. autotroph. heterotroph.arrow_forward
- Hypothetical balanced food chain. Sun and Earth supply 6 units of energy to each plant. For higher tropic levels, individuals consume 2 units of energy each before passing the remainder to the next trophic level. The number of individuals in each trophic level is given below. Complete the table below by computing for the number of energy units in each column. Trophic Levels No. Individuals in Each Trophic Level No. of Units Received from Trophic Level Above No. Units Used / Individual (Resp) No. Units Used in Trophic Level No. Units Remaining & Passed on to Next Trophic Level Mean No. Units Available per Individual in Trophic Level SUN +E = 6 1) Plants 30 180 2 2) Grasshopper 19 2 3) Frog 12 2 4) Snake 8 2 5) Owl 4 2arrow_forwardHow would you describe the trophic levels in a typical ecosystem? Discuss the flow of energy through the ecosystem, the relationship between the different trophic levels, and the factors that limit the number of trophic levels.arrow_forwardEnergy flows from one trophic level in the food chain to another, at each level only _____% (10, 1, 90) of the energy or biomass is transferred efficiently for use in the next level. The rest is either expended by cellular respiration or lost as feces.arrow_forward
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