In this ecosystem the net productivity of the vegetation is 24 525 KJ m^-2 year^-1. Use this information and Figure 1 to calculate the energy stored in new tissues of the zebra in KJ m^-2 year^-1.

32-33) You conduct a dark-bottle light bottle experiment. The Light Bottle has an initial oxygen concentration of 12 mg/l, and aftera two hour incubation, it has an oxygen concentration of 14 mg/l. The dark bottle also bas an initial oxygen concentration of 12 mg/l, and falls to 6 mg/l aftertwo hours. What is the Net Primary Productivity, expressed as rate of oxygen production? What is Gross Primary Productivity? Make sure to attach proper units here.

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“Energy flow in an ecosystem is always unidirectional". justify the statement.

CONTENTS Check Answer Select an IPCC scenario using the drop-down menu under the power plant labeled Anthropogenic Carbon Output. Run each scenario using this RUN button: Year: 2100 Section 4: Global Biogeochemical Cycles Nutrient Cycling 15 Q4.8. What is the expected concentration of atmospheric CO₂ (ppm) in 2100 for each scenario? (Click the graph line to see precise values.) Click Check Answer for feedback. Increasing Affluence 67 Plant Respiration Photosynthesis 138 Litterfall 65 450 Regionality 5.3 Fire 500 5 610 ABOVE GROUND 1828 SOIL Green Growth SimUText 2022-2023 234 0.39 Land-Use Change 11 / 23 1499 ATMOSPHERIC Atmospheric Above Ground Soil Surface Ocean 64 Soil Respiration Deep Ocean CO2 (ppm) Increasing Affluence 850T 750+ 650 550 450 350 13.2 Anthropogenic Carbon Output 0 2000 0 120 NOTES 114 Carbon Pool Size (Pg) Atmospheric CO₂ Concentration Atmosphere-Ocean Exchange 102 YEAR QUESTIONS 108 Surface-Deep Ocean Exchange 2000 40000 972 2100 Pool units: Pg Flux units: Pg y-¹…

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DATA Table 2 Table 3 Absorbance Absorbance Absorbance Time Rate of unboiled unboiled boiled Chloroplast (min) photosynthesis light dark light 143 153 Unboiled . 0003 5 | .156 •160 .143 Dark 000 74 10 -184 .152 Boiled -. 00062 15 .]53 161 . 140 20 .148 139 QUESTIONS 1. IS THERE EVIDENCE THAT CHLOROPLASTS WERE ABLE TO REDUCE DPIP IN THIS EXPERIMENT? EXPLAIN. 2. Were chloroplasts able to reduce DPIP when kept in the dark? Explain. 3. Were boiled chloroplasts able to reduce DPIP ? Explain. 4. What conclusions can you make about the photosynthetic activity of spinach?

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