Question
1.) How might you add "Keystone species" to the concept map?
A.) Keystone species increase competition among all populations in a community.
B.) Keystone species are the most abundant members of communities.
C.) Keystone species always live with other species in symbiosis.
D.) Keystone species influence the diversity of communities.
2.) What is the correct relationship between the abiotic environment and trophic levels? (Select all that apply.)
The resources available in the abiotic environment limit the number of trophic levels in a community.
Fat soluble chemicals that organisms at low trophic levels obtain from the abiotic environment will decrease in concentration in the higher trophic levels.
Organisms at the lowest trophic level of a community obtain nutrients directly from the abiotic environment.
Some of the energy that producers obtain from the abiotic environment is lost at each trophic level.
3.) Herbivory has the same effect on species in a community as
competition.
mutualism.
commensalism.
parasitism.
Asked By SereneWanderer85 at
Answered By Expert
Jamie
Expert · 3.2k answers · 3k people helped
Step 1/2
To add "Keystone species" to the concept map, the most appropriate statement would be:
D.) Keystone species influence the diversity of communities.
Explanation:
Keystone species are those that have a significant impact on the structure and functioning of an ecosystem, disproportionate to their abundance. They play a crucial role in maintaining the balance and diversity of communities by exerting control over other species or ecological processes. Their presence or absence can have far-reaching effects on the ecosystem's overall biodiversity and stability.
Option D correctly captures the essence of the role of keystone species in influencing community diversity. By adding this statement to the concept map, it helps highlight the importance of keystone species in shaping the composition and dynamics of ecological communities.
Step 2/2
The other given options in the question are incorrect as:
Explanation:
A.) Keystone species increase competition among all populations in a community: This option is not accurate. Keystone species do not necessarily increase competition among all populations in a community. Their role is more focused on exerting influence and regulating other species within the ecosystem.
Explanation:
B.) Keystone species are the most abundant members of communities: This option is incorrect. Keystone species are not defined by their abundance. They can be present in low or high numbers but have a significant impact on the ecosystem's structure and function.
Explanation:
C.) Keystone species always live with other species in symbiosis: This option is also incorrect. While some keystone species may have symbiotic relationships with other species, it is not a requirement for them to always live in symbiosis. Keystone species can influence the community through various mechanisms, such as predation, habitat modification, or resource provisioning.
Final Answer
Therefore, the correct option to add "Keystone species" to the concept map is:
D.) Keystone species influence the diversity of communities.
This option accurately represents the key role of keystone species in influencing the diversity of ecological communities.
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