Card 0 of 2002
Which of the following terms is used to describe the speed at which equilibrium is re-established after a disturbance?
“Resilience” is the term used to describe the speed at which an ecosystem can re-establish equilibrium after a disturbance.
Compare your answer with the correct one above
Which of the following is a correct representation of a possible food chain?
A flower in this example is a producer, which means it will make its own energy through photosynthesis. As a result, the flower must be the first element of our chain; food chains will always start with a producer. The caterpillar, frog, and snake are consumers, meaning they will need other organisms for energy.
Compare your answer with the correct one above
Which of the following is not involved in an eco-chemical cycle?
Water, carbon, nitrogen, sulfur, and phosphorus have cyclic pathways that allowing them to flow within an ecosystem. Iron is not involved in very many ecological processes, and does not follow a defined chemical cycle.
Compare your answer with the correct one above
How do plants and animals receive carbon, respectively?
Plants and animals receive carbon through photosynthesis and consumption, respectively.
Compare your answer with the correct one above
Recycling is an important component of a functioning ecosystem. Which of the following is an example of nutrient recycling?
Nutrient recycling specifically refers to the movement of materials within food webs and ecosystems that recycle them back into production. Nutrient recycling can be distinguished from biogeochemical cycles, like the water, nitrogen, and carbon cycles, which describe the exchange of matter through living and non-living components of the Earth.
Compare your answer with the correct one above
Which of the following best describes what the food web represents within an ecosystem?
The food web presents a graphical representation of the interconnected food chains within an ecosystem. In other words, food chains illustrate the trophic levels of a particular ecosystem.
Compare your answer with the correct one above
Which of the following terms is used to describe the different levels of a food chain?
Trophic level is the term used to a specific point on the food chain. An organism’s trophic level is the place they occupy in the food chain of a particular ecosystem.
Compare your answer with the correct one above
Which of the following best represents a component of biodiversity?
Biodiversity refers to the different types of life present on Earth. This can refer to the variety of species in an ecosystem, the genetic variation across the planet, and ecosystem variation.
Compare your answer with the correct one above
Which of the following is true regarding keystone species?
Despite their relatively small abundance, keystone species have a large impact on the environment in which they inhabit. If a keystone species is removed from an ecosystem, then there may be a large change in ecosystem’s stability.
Compare your answer with the correct one above
How does human initiated deforestation impact ecosystems?
Deforestation can be defined as the removal of forests by humans. Deforestation has many negative environmental impacts including soil erosion, a decline in biodiversity, and an increase in greenhouse gas emissions.
Compare your answer with the correct one above
Which of the following is true regarding tropical rainforest biomes?
Tropical rainforest biomes have the greatest biodiversity of all biomes. They have only two seasons (rainy and dry) and the soil in these environments is generally nutrient-poor. Tropical rainforests also have a multi-layered canopy that allows little light to penetrate to the ground.
Compare your answer with the correct one above
Where does primary succession occur?
Primary succession is the colonizing of a new environment that lacks organisms and plant life. Primary succession is different from secondary succession; secondary succession is the colonizing of an environment that once supported life but was abandoned due to an ecological disturbance. An example of this is the colonizing of new land formed by lava flow.
Compare your answer with the correct one above
Which of the following best describes when secondary succession occurs?
Secondary succession can be described as the colonization of a habitat that once supported plant and animal life but was abandoned due to ecological disturbance. Types of ecological disturbances such as hurricanes and floods can empty a habitat.
Compare your answer with the correct one above
Which type of succession would be likely to occur in an area that has recently experienced a wildfire?
Primary succession occurs in an environment without previous life, or a barren habitat. Secondary succession occurs in an area that had previously been inhabited but experienced a disturbance, such as a wildfire. In this scenario, there still would be soil.
Compare your answer with the correct one above
In an area with primary succession occurring, which type of wildlife would be likely to grow first?
Primary succession occurs in an environment without previous life, or a barren habitat. The first organisms to grow (called pioneer species) are fast growing, hardy species.
Compare your answer with the correct one above
Where would primary succession likely occur?
Primary succession occurs in an environment without previous life, or a barren habitat. Secondary succession occurs in an area that had previously been inhabited but experienced a disturbance, such as a wildfire. The newly created volcanic island has no previous life, and is made of rock, devoid of soil.
Compare your answer with the correct one above
During primary succession, when are pioneer species likely to be found in an environment?
Pioneer species are the first species to colonize an environment, and thus would be found in the early stages of succession.
Compare your answer with the correct one above
Which would not be a cause of secondary succession?
Primary succession occurs in an environment without previous life, or a barren habitat. Secondary succession occurs in an area that had previously been inhabited but experienced a disturbance, such as a lava flow. Secondary succession occurs in environments that have been distrubed, but have some remaining soil and vegetation.
Compare your answer with the correct one above
The first species to inhabit an area after a disruption area called
The first species to inhabit an area that has been disrupted are called pioneer species. This is true in both primary and secondary succession. These pioneer species are hardy species that can withstand harsh conditions.
Compare your answer with the correct one above
Which is true of ectotherms?
Ectotherms do not regulate their body temperature; their body temperature fluctuates due to their external environment.
Compare your answer with the correct one above