21- Define carrying capacity and understand how it can affect population size. 2
ID: 47341 • Letter: 2
Question
21- Define carrying capacity and understand how it can affect population size.
22- Compare and contrast density-dependent and density independent factors that affect population growth.
23- Compare and contrast opportunistic and equilibrium life history adaptations.
24- Explain the interactions in communities and ecosystems.
25- Compare and contrast competition, mutualism, commensalism, parasitism, herbivory, and predation.
26- Describe competitive exclusion.
27- Explain how species interactions can lead to coevolution.
28- Describe and give examples of the importance of keystone species.
29- Compare and contrast primary and secondary succession.
30- Explain the roles of producers, consumers and decomposers in an ecosystem.
21- Define carrying capacity and understand how it can affect population size.
22- Compare and contrast density-dependent and density independent factors that affect population growth.
23- Compare and contrast opportunistic and equilibrium life history adaptations.
24- Explain the interactions in communities and ecosystems.
25- Compare and contrast competition, mutualism, commensalism, parasitism, herbivory, and predation.
26- Describe competitive exclusion.
27- Explain how species interactions can lead to coevolution.
28- Describe and give examples of the importance of keystone species.
29- Compare and contrast primary and secondary succession.
30- Explain the roles of producers, consumers and decomposers in an ecosystem.
Explanation / Answer
21- Define carrying capacity and understand how it can affect population size.
The maximum population size an environment can sustain by giving food, habitat, water, and all other necessities available in the environment is called carrying capacity of a biological species. Population size varies in their capacity to grow. It depends on the species’ reproductive span, litter size, frequency of reproduction, and survival rate. For any population that grows exponentially, growth starts primarily slowly, enters a rapid growth phase, and then levels off on the reaching the carrying capacity for that species. The size of the population then fluctuates slightly above or below the carrying capacity.
22- Compare and contrast density-dependent and density independent factors that affect population growth.
Density-independent factors include weather and climate. They exert their influence on population size irrespective of the population's density.
In contrast, the effect of density-dependent factors amplifies with the increase in population size. Thus, it depends on the density of the population. For example, predation, availability of food, disease, and migration.
23- Compare and contrast opportunistic and equilibrium life history adaptations.
The r-selected species are referred to as “opportunistic life history adaptations,” while the K-selected species are referred to as “equilibrium life history adaptations.” The equilibrium life history adaptations display traits accompanying the living at densities closer to the carrying capacity.
24- Explain the interactions in communities and ecosystems.
Interactions in communities are a complex array of direct and indirect interactions. They include competition, predation, herbivory, parasitism, mutualism, commensalism, amensalism, and neutralism. In ecosystem, each organism interacts with its ecosystem, indicating an interaction between a living organism and a non-living organism. Thus, interactions in communities are between two living organisms, while interactions in ecosystems are between a living and non-living organisms.
25- Compare and contrast competition, mutualism, commensalism, parasitism, herbivory, and predation.
Competition occurs when two organisms compete for the same resource. In this, both the individuals are negatively impacted.
Mutualism is a kind of relation, in which both the partners benefit from the relationship.
Commensalism is a kind of relation in which one organism is positively affected by the relationship, while the other organism is not affected, either negatively or positively.
Parasitism is a kind of interaction in which the host is negatively affected by the loss of nutrients to the parasite.
When a plant is eaten by any other organism, it is considered herbivory.
Predation is a kind of interaction in which one organism (the predator) consumes the other organism (the prey).
26- Describe competitive exclusion.
Competitive exclusion is a proposition and it states that no two species competing for the same resource can coexist at the constant population values, when other ecological factors remain constant. This is otherwise called Gause’s law.
27- Explain how species interactions can lead to coevolution.
Any change in a biological object activated by the change in a related object is called Coevolution. It occurs at different biological levels. Best example includes the evolution of high crowned teeth in grazers when grasslands spread through the area.
28- Describe and give examples of the importance of keystone species.
Keystone species are those species that has a large effect on its environment relative to its abundance. They play a crucial role in maintaining the structure of an ecological community. They affect many other organisms living with them in the ecosystem.
29- Compare and contrast primary and secondary succession.
Primary succession occurs on a place that lacks soil (lava), while secondary succession starts by an event (hurricane, forest fire, etc.) and reduces the pre-existing ecosystem.
30- Explain the roles of producers, consumers and decomposers in an ecosystem.
Producers utilize the energy from the environment (sunlight and carbon dioxide) and produce carbon bonds. For example: photosynthesis.
Consumers are the living organisms that eat other living organisms. They maintain or balance out the food chains.
Decomposers are those organisms that breakdown the organic matter in to simple molecules. They work on the dead bodies of plants and animals, thus clearing them and also recycling the nutrients.
21- Define carrying capacity and understand how it can affect population size.
The maximum population size an environment can sustain by giving food, habitat, water, and all other necessities available in the environment is called carrying capacity of a biological species. Population size varies in their capacity to grow. It depends on the species’ reproductive span, litter size, frequency of reproduction, and survival rate. For any population that grows exponentially, growth starts primarily slowly, enters a rapid growth phase, and then levels off on the reaching the carrying capacity for that species. The size of the population then fluctuates slightly above or below the carrying capacity.
22- Compare and contrast density-dependent and density independent factors that affect population growth.
Density-independent factors include weather and climate. They exert their influence on population size irrespective of the population's density.
In contrast, the effect of density-dependent factors amplifies with the increase in population size. Thus, it depends on the density of the population. For example, predation, availability of food, disease, and migration.
23- Compare and contrast opportunistic and equilibrium life history adaptations.
The r-selected species are referred to as “opportunistic life history adaptations,” while the K-selected species are referred to as “equilibrium life history adaptations.” The equilibrium life history adaptations display traits accompanying the living at densities closer to the carrying capacity.
24- Explain the interactions in communities and ecosystems.
Interactions in communities are a complex array of direct and indirect interactions. They include competition, predation, herbivory, parasitism, mutualism, commensalism, amensalism, and neutralism. In ecosystem, each organism interacts with its ecosystem, indicating an interaction between a living organism and a non-living organism. Thus, interactions in communities are between two living organisms, while interactions in ecosystems are between a living and non-living organisms.
25- Compare and contrast competition, mutualism, commensalism, parasitism, herbivory, and predation.
Competition occurs when two organisms compete for the same resource. In this, both the individuals are negatively impacted.
Mutualism is a kind of relation, in which both the partners benefit from the relationship.
Commensalism is a kind of relation in which one organism is positively affected by the relationship, while the other organism is not affected, either negatively or positively.
Parasitism is a kind of interaction in which the host is negatively affected by the loss of nutrients to the parasite.
When a plant is eaten by any other organism, it is considered herbivory.
Predation is a kind of interaction in which one organism (the predator) consumes the other organism (the prey).
26- Describe competitive exclusion.
Competitive exclusion is a proposition and it states that no two species competing for the same resource can coexist at the constant population values, when other ecological factors remain constant. This is otherwise called Gause’s law.
27- Explain how species interactions can lead to coevolution.
Any change in a biological object activated by the change in a related object is called Coevolution. It occurs at different biological levels. Best example includes the evolution of high crowned teeth in grazers when grasslands spread through the area.
28- Describe and give examples of the importance of keystone species.
Keystone species are those species that has a large effect on its environment relative to its abundance. They play a crucial role in maintaining the structure of an ecological community. They affect many other organisms living with them in the ecosystem.
29- Compare and contrast primary and secondary succession.
Primary succession occurs on a place that lacks soil (lava), while secondary succession starts by an event (hurricane, forest fire, etc.) and reduces the pre-existing ecosystem.
30- Explain the roles of producers, consumers and decomposers in an ecosystem.
Producers utilize the energy from the environment (sunlight and carbon dioxide) and produce carbon bonds. For example: photosynthesis.
Consumers are the living organisms that eat other living organisms. They maintain or balance out the food chains.
Decomposers are those organisms that breakdown the organic matter in to simple molecules. They work on the dead bodies of plants and animals, thus clearing them and also recycling the nutrients.
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.