Need help The number of trophic levels an ecosystem can support is driven by... (select all that apply)O The efficiency of energy transfer across trophic levelsO The amount of energy available (primary productivity)V The speed of nutrient cycling (decomposition)The composition of the plant communityO The population size of top predators in the ecosystem

The number of trophic levels an ecosystem can support is driven by... (select all that apply) The efficiency of energy transfer across trophic levels The amount of energy available (primary productivity) The speed of nutrient cycling (decomposition) The composition of the plant community The population size of top predators in the ecosystem

The number of trophic levels an ecosystem can support is driven by... (select all that apply) The efficiency of energy transfer across trophic levels The amount of energy available (primary productivity) The speed of nutrient cycling (decomposition) The composition of the plant community The population size of top predators in the ecosystem

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter54: Ecosystems And Global Change

Section: Chapter Questions

Problem 2TYK: The total dry weight of plant material in a forest is a measure of the forests: a. gross primary...

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The direction of the arrows in a trophic chain (as the one in the figure below) represents... A E O B) direction of movement of matter O Both B and C O A, B, and C O A) direction of consumption, from higher level consumer to lower level consumer O C) direction of movement of energy O Both A and C
The amount of energy available at the highest trophic level in an ecosystem is determined by: a. only the gross primary productivity of the ecosystem. b. only the net primary productivity of the ecosystem. c. the gross primary productivity and the standing crop biomass. d. the net primary productivity and the ecological efficiencies of herbivores. e. the net primary productivity and the ecological efficiencies at all lower trophic levels.
In terrestrial ecosystems, the energy and biomass pyramids are the same in that they store the most at the bottom trophic levels (with primary producers). However, in aquatic ecosystems, the pyramids are inverted. Why is this? O None of these answers is correct. O Aquatic ecosystems have fewer plants and other autotrophs Aquatic ecosystems have more keystone predators Aquatic ecosystems have fewer decomposers Aquatic ecosystems have more types of filter feeders
The Law of 10% in trophic levels states O Only 10% of the energy in a trophic level is transferred to the next tropic level by consumption O Only 10% of the prey are eaten by a top predator O 10% of the energy is lost between one trophic level to the next O 10% of the energy in an ecosystem is heat energy
Of the total amount of energy that passes from one trophic level toanother, about 10% isa. respired and becomes heat.b. passed out as feces or urine.c. stored as body tissue.d. recycled to autotrophs.e. All of these are correct
The number of trophic levels an ecosystem can support is driven by… (select all that apply) A- The amount of energy available (primary productivity) B- The speed of nutrient cycling (decomposition) C- The population size of top predators in the ecosystem D- The efficiency of energy transfer across trophic levels E- The composition of the plant community
ctional What proportion of energy stored at one trophic level ends up being LOST as it moves to the next trophic level? O 10% O 25% O 50% O 75% O 90%
What happens if there’s a natural disturbance (drought) affecting the balance of the food chain so that the Sun +E can supply only 4 energy units per plant? Compute for energy units following the table below. 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 = 4 1) Plants 30 2 2) Grasshopper 19 2 3) Frog 12 2 4) Snake 8 2 5) Owl 4 2
AP Environmental Science Primary Productivity Problems Net Primary Productivity efficiency can be calculated for terrestrial producers when values for insolation energy, respiration loss and gross productivity are known. Use the equations below to answer the following problems: Net Primary Productivity = Gross Productivity – Respiration Loss Efficiency = . NPP . X 100 Insolation Energy In a rice paddy in Southeast Asia, the insolation energy is 6,000,000 calories/m2/day. The gross productivity of the rice is 0.012 grams/cm2/day, and the respiration loss is 20 percent. One gram of rice is equivalent to 1000 calories. Calculate the net primary productivity of the rice. Find the efficiency of photosynthesis by the rice. Could you mostly help me set it up and find it? So I can learn how to do it.
Gross primary productivity refers to the total a. energy used by the heterotrophs of the ecosystem in a given period of time energy captured initially by the producers OC.quantity of solar energy reaching a given area of the ecosystem O d.quantity of solar energy available to the ecosystem in a given period of time e. energy used by the producers for their growth and reproduction b.
4.2 What happens if there's a natural disturbance (drought) affecting the balance of the food chain so that the Sun +E can supply only 4 energy units per plant? Compute for energy units following the table above and answer the following questions: No. No. units Mean no. individuals No. of units No. units No. units remaining & passed on to next trophic units in each received used/indi used in available per trophic from trophic vidual level Trophic individual in trophic level Levels level above (Resp) level trophic level SUN +E = 4 1) Plants 30 2 2) Grasshopper 3) Frog 19 2 12 2 4) Snake 8 2 5) Owl 4 2
a. What factors cause energy to decrease with each trophic level?b. How is it possible for energy to be lost and the ecosystem to stillrun efficiently?c. Are the nutrients on the earth a renewable resource? Why or why not?