Multiple Choice
Which type of natural selection favors individuals with intermediate phenotypes, resulting in higher fitness compared to those with extreme phenotypes?
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1. Introduction to Biology
Natural Selection and Evolution
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Succession of communities occurs because __________.
A
the environment is modified by the organisms living in it, making it suitable for other species
B
natural selection eliminates all pioneer species immediately
C
climax communities are always the first to colonize an area
D
all species in a community appear at the same time
Verified step by step guidance1
Understand the concept of ecological succession: Ecological succession is the process by which the structure of a biological community evolves over time. It involves changes in the species composition of an area, often starting with pioneer species and leading to a climax community.
Recognize the role of pioneer species: Pioneer species are the first organisms to colonize a barren or disturbed environment. These species modify the environment, making it more suitable for other species to inhabit.
Analyze the options provided: Evaluate each option to determine which one aligns with the concept of ecological succession. For example, natural selection does not eliminate all pioneer species immediately, and climax communities are not the first to colonize an area.
Focus on the correct explanation: The correct answer should reflect the idea that the environment is modified by the organisms living in it, which facilitates the arrival of other species. This is a key principle of ecological succession.
Conclude by identifying the correct answer: Based on the understanding of ecological succession, the correct answer is that succession occurs because the environment is modified by the organisms living in it, making it suitable for other species.
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