Biological Science (6th Edition)
6th Edition
ISBN: 9780321976499
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Emily Taylor, Greg Podgorski, Jeff Carmichael
Publisher: PEARSON
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Chapter 53, Problem 5TYU
Summary Introduction
Introduction:
Gross primary productivity (GPP) is the chemical energy produced by the plants (producers) in a given space and time. A small portion of GPP is utilized by the plants for respiration (R) and growth. The energy left after respiration by the primary producers is known as net primary productivity (NPP).
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Chapter 53 Solutions
Biological Science (6th Edition)
Ch. 53 - What is the main global reservoir of nitrogen?Ch. 53 - Prob. 2TYKCh. 53 - Prob. 3TYKCh. 53 - Devegetation has what effect on ecosystem...Ch. 53 - Prob. 5TYUCh. 53 - Explain why decomposition rates in a field in...Ch. 53 - Why are the open oceans nutrient poor? Why are...Ch. 53 - Prob. 8TYUCh. 53 - Prob. 9TYPSSCh. 53 - During the Carboniferous period, rates of...
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- Forest trees have trunks, branches, and big roots, contributing to large amounts of total biomass. Grasslands have comparatively less biomass, but have a larger net primary production than that of forests. Why is this so? A. Less respiration is needed in the forest habitat B. More biomass is added in a grassland in the same time as that of forests C. The number of consumers within the forest is greater D. Solar energy is converted to chemical energy at a much higher rate in forestsarrow_forward***SIMPLE ANSWER PLS*** State how biotic potential and limiting factors affect the carrying capacity.arrow_forwardAs a general rule, how much energy is lost in the transmission of energy from one trophic level to the one immediately above it? a. 1% b. 10% c. 90% d. 50%arrow_forward
- If the gross primary productivity is 100 g/m2/year and the respiration rate is 37 g/m2/year what is the net primary productivity? Group of answer choices a. 37 g/m2/year b. can’t tell from the information given c. 50 g/m2/year d. 63 g/m2/year e. 25 g/m2/yeararrow_forwardWhich statement best explains why persistent, fat-solublechemicals such as methylmercury accumulate in the highesttrophic levels?a. Animals at the highest trophic levels eat the lowest-quality food.b. The amount of biomass increases in each trophic level, and largeorganisms accumulate the most methylmercury.c. Large organisms are often herbivores, so they would consumemethylmercury directly.d. Methylmercury does not leave an animal’s body; each predatortherefore consumes the mercury contained in many prey.arrow_forwardAssume that the producer level in your trophic pyramid contains 12,000,000 kcal of energy. Write the number of kcal that would be available to the other two levels of the pyramid.arrow_forward
- The gross primary productivity is 100 g/m2/year and the respiration rate is 57 g/m2/year . If the standing crop (of plants) in the above question is 145 g/m2 what will the standing crop (of plants) be a year later, assuming no death/predation? Group of answer choices can't tell from the information given a. 188 g/m2 b. 145 g/m2 c. 245 g/m2 d. 182 g/m2arrow_forwardIn an experiment you grow three different experimental plant plots: a control (no herbivores or nutrients), plants with herbivores, and plants with added nutrients (herbivores still present). Given these results, describe what accurate conclusions can be drawn given the statistical differences represented.arrow_forwardSuppose that 100 cattle were allowed to graze in either one of two pastures. If the grass were three times more productive in Pasture A than Pasture B, how many cattle would be in each pasture, if they followed the Ideal Free Distribution? What might prevent this distribution of cattle from happening?arrow_forward
- If 10,000 kilocalories (kcal) of energy were contained in the primary producers (trophic level 1; the bottom of the food pyramid), on average how many kcal of energy would you expect to be transferred to second-order consumers (trophic level 3)? Select one: a. 10 kcal × b. 1 kcal c. 10,000 kcal d. 1,000 kcal е. 100 kcal O O Oarrow_forwardBased on results from studies at Hubbard Brook Experimental Forest, what would be the predicted effect of clearing trees from a watershed? a. Increased loss of water and nutrients from a watershed b. Decreased loss of water and nutrients from a watershed c. Increased availability of phosphorus d. Increased availability of nitratearrow_forwardWhich is NOT a downside to the loss of crop diversity? A. More vulnerability to pests/diseases. B. Loss of consumer options. C. Lower nutritional value. D. Lower availability of corn and wheat.arrow_forward
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