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6 Jul 2019

Acid rain negatively affects plants by

A. reducing the photosynthetic rate in the leaves

B. burning the leaves and bark.

C. leaching cations that the plant needs from the soil

D. leaching anions from the soil that the plant needs

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Related questions

THIS IS PART A OF A QUESTION WITH ITS SUBPARTS

What approach could be used to determine if nitrogen availability in the soil directly limits the nutrient concentration of Metrosideros polymorpha leaves?

a)draining water from experimental plots where M. polymorpha is present

b) adding a known quantity of nitrogen to several experimental plots where M. polymorpha is present

c) removing leaf litter from a non-forested experimental plot and placing it into another where M. polymorpha is present

d) removing leaf litter from several experimental plots where M. polymorpha is present

e) Nutrient concentration in leaves cannot be accurately measured.

Decomposition would be highest in which of the following ecosystems?

a) temperate deciduous forest

b)desert

c) rain forest

d) coniferous (boreal) forest

e) arctic tundra

Which of the following is a result found by Dr. Schuur in this study?

View Available Hint(s)

Which of the following is a result found by Dr. Schuur in this study?

a. Low soil oxygen levels leads to an increase in the rates of decomposition and mineralization.

b. Litter quality has no effect on decomposition.

c. Lower soil nitrogen leads to higher nitrogen concentration in leaves.

d. High precipitation leads to low soil oxygen levels.

e. Increased nitrogen availability is responsible for the decline in net primary productivity across the rainfall gradient within his study area.

Why does soil oxygen concentration have a direct relationship to decomposition rates?

View Available Hint(s)

Why does soil oxygen concentration have a direct relationship to decomposition rates?

a. Soil oxygen reduces the presence of soil fungi (e.g., mycorrhizae).

b. Soil oxygen influences the concentration of carbon dioxide available to leaves.

c. Soil oxygen affects the uptake of nutrients by plant roots.

d. Soil oxygen allows microbes to break down carbon molecules.

e. Soil oxygen affects the uptake of water by plant roots.

The limiting factor on net primary productivity (NPP) in species-rich, lowland ecosystems is __________.

a. carbon

b. nitrogen

c. phosphorus

d. precipitation

e. soil oxygen

10. which of the following occurs with leaching a. rainwatercombines with carbon dioxide from humus, b. soluable salts areremoved from the soil. c. carbonic acid solution is formed. d. allor e. none
11. caverns form when underground streams dissolve. a. granite. b.limestone. c stalactites. d. humus.. e. coral.
12. sand formed from which of the following is not white. quart,gypsum, basalt, calcium carbonate, or all the above will bewhite.
13. lakes have __ water. fresh, salt, either, neither fresh orsaline
14.the term groundwater primarily refers to .. undergrounds riversand lakes, water that fiters down and saturates the soil or waterfound lying on the surface of the ground.
15. lakes are ___permandnet always, sometimes. never
16. the water table is defined as the surface of lakes and rivers,the bottome , the te top of the water saturated zone or the bottomof the saturated zone

Which is FALSE? First exclude the four correct answers.

a) The leaves are only a small part of the plant and must produce enough energy-rich sugars to support all non-green parts like roots or flowers.

b) Only when overall photosynthetic activity is greater than overall respiration activity of the whole plant can the plant accumulate biomass and grow.

c) Sugar produced in photosynthesis must support the plantâs energy needs both day and night.

d) Leaves perform more photosynthesis than respiration because they donât have mitochondria.

e) In trees that drop their leaves over the winter, some sugar produced in one year is stored in stems or roots and fuels the production of new leaves in the next year.