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Chapter 54: Q54-1TYU (page 1235)

The feeding relationships among the species in a community determine the community's

(A) secondary succession.

(B) ecological niche.

(C) species richness.

(D) trophic structure.

Short Answer

Expert verified

  1. The option "secondary succession" isfalse.

  2. The option "ecological niche" isfalse.

  3. The option "species richness" is false.

  4. The option "trophic structure" is true.

Step by step solution

01

Community

In ecology, the social unit of interacting living organisms with specific common characteristics in a geographical area is called community.

02

Explanation of option '(A)'

The form of ecological succession in which changes occur in habitat due to the replacement of a damaged community by new inhabitants is called secondary succession.

Thus, the secondary succession is related to the re-colonization of organisms in an area.

Therefore, the given option is false.

03

Explanation of option '(B)'

When species utilize abiotic and biotic resources that determine their functional role in their natural environment, it is called an ecological niche,

Thus, the ecological niche is associated with the species that exist in the environment.

Therefore, the given option is false.

04

Explanation of option '(C)'

In evolutionary biology and ecology, the term species richness represents the count of species living in a defined area, such as an ecological community.

Thus, the species richness does not take into account the feeding relationship.

Therefore, the given option is false.

05

Explanation of option '(D)'

The way that shows the pattern of organisms' arrangement at different trophic levels based on their energy consumption is called a trophic level.

Thus, the trophic structure deals with the trophic level that shows the resource consumption by organisms in a food chain and represents their feeding relationship.

Therefore, the given option is true.

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Most popular questions from this chapter

Describe two types of ecological interactions that appear to be occurring between the three species shown in this photo. What morphological adaptation can be seen in the species that is at the highest trophic level in this scene?

An ecologist studying desert plants performed the following experiment. She staked out two identical plots, containing sagebrush plants and small annual wildflowers. She found the same five wildflower species in roughly equal numbers on both plots. She then enclosed one plot with a fence to keep out kangaroo rats, the most common grain-eaters of the area. After two years, four of the wildflower species were no longer present in the fenced plot, but one species had become much more abundant. The control plot had not changed in species diversity. Using the principles of community ecology, propose a hypothesis to explain her results. What additional evidence would support your hypothesis?

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(B) tropical regions generally have more available water and higher levels of solar radiation.

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