𝘂𝗻𝗶𝘁 𝗼𝗻𝗲 𝗰𝗼𝗹𝗹𝗲𝗴𝗲 𝗯𝗼𝗮𝗿𝗱 𝗽𝗿𝗮𝗰𝘁𝗶𝗰𝗲 𝘁𝗲𝘀𝘁

Based on the second law of thermodynamics, how much biomass of phytoplankton would be needed to produce 1 kilogram (kg) of large fish in this food web?

1000 kg ( you add a 0 every time )

A temperate grassland biome has a gross primary productivity of 3,480kilocalories/meter2/year and a net primary productivity of 2,000kilocalories/meter2/year. Which of the following is the approximate number of kilocalories/meter2/year available to herbivores in that biome?

200 kilocalories/meter2/year

Based on the food web shown above, which of the following correctly describes the flow of energy through the trophic levels from producers to quaternary consumers?

Brittlebrush, grasshopper, grasshopper mouse, rattlesnake, red-tailed hawk

Which of the following best describes the flow of energy in most terrestrial and near-surface marine ecosystems?

Producers use energy from the sun to make organic matter, such as sugars, from carbon dioxide and water and are then consumed by organisms higher in the food chain.

Which of the following statements is best supported by the diagram of the phosphorus cycle?

The phosphates absorbed by animal tissue through consumption eventually return to the soil.

Six white-tailed deer and six sika deer were enclosed in a pasture for observation during an eight-year study in central Texas. White-tailed deer are a native species to central Texas, while sika deer are a nonnative species to central Texas. White-tailed deer feed on flowering plants and the tips of trees and shrubs but do not eat grass. Sika deer feed on flowering plants, the tips of trees and shrubs, and grass. All other grazing animals were kept out of the pasture during the study. The number of sika deer more than doubled after the eight years, while the population of white-tailed deer decreased by 50 percent.

The sika deer out competed the white-tailed deer in consuming flowering plants and shrubs.

Which of the following best describes an example of resource partitioning in an ecosystem?

Two different bird species feed from the same oak tree; one eats acorns, and the other eats insects in the bark.

Which of the following best describes a terrestrial ecosystem that will have the highest net primary productivity?

Warm temperatures, high rainfall, and consistent sunlight

Based on the diagram, which of the following statements about the hydrologic cycle is true?

Water from the ocean evaporates and condenses in the atmosphere

Which of the following types of organisms are required to complete the nitrogen cycle, including the process of denitrification?

bacteria

Which of the boxes represents a carbon source?

burning of fossil fuels

Which of the following biogeochemical cycles includes the processes of buffering ocean pH and photosynthesis, as shown in the diagram?

carbon cycle

This rate of reaction can be measured in the dark by determining the amount of oxygen gas consumed in a period of time.

cellular respiration

The total rate of photosynthesis in a given area.

gross primary productivity

Which of the following smaller reservoirs of freshwater are missing from the diagram?

ice capes

Energy is transferred along food chains from one stage to the next. Which statement best explains how the energy is transferred?

if a primary producer stores 100,000kcal of energy, then a secondary consumer will have 10,000kcal of energy available.

In reef ecosystems, corals often have microalgae living inside them. The algae supply the corals with nutrients, and the coral give shelter to the algae. Which of the following interactions best describes the relationship between the corals and the algae?

mutualism

The energy available to consumers determined by subtracting the energy used by plants from the total energy transformed by the process of photosynthesis.

new primary productivity

Which of the following processes is illustrated by the downward arrows from the atmosphere that show the conversion of nitrogen gas into usable forms available to producers?

nitrogen fixation

The diagram above best illustrates major processes in which of the following biogeochemical cycles?

phosphorus cycle

Which of the following trophic levels represents a primary producer in an aquatic food chain

phytoplankton

Which trophic level has the least available energy in kilojoules in this food web

phytoplankton

The majority of the nitrogen on Earth can be found in which of the following reservoirs?

soil bacteria

Which of the following best describes what is represented by the arrows in the food web?

the flow of energy

Which of the following best identifies a key component of the hydrologic cycle that powers the movement of water and is missing from the diagram?

the sun

Farmers in a suburban coastal town started using no-till agriculture, a practice that reduces soil erosion from their farmland. Use the image above to determine which of the following long-term effects no-till agriculture will have on the ecosystem surrounding the farmland.

there will be less algal growth in the nearby ocean

Which box represents a carbon sink that holds carbon compounds for the shortest period of time?

vegetation