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Species concepts Knowledge-Based Practice

Biology · Evolution · Biology · Speciation & Phylogeny

5 Biology practice questions on Species concepts. Questions that assess core concepts and understanding.

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Questions

  1. 1.

    According to the biological species concept, which factor directly prevents gene flow between populations and maintains the boundaries between different species?

    • A) Geographic separation
    • B) Morphological divergence
    • C) Reproductive isolation
    • D) Ecological niche differentiation
  2. 2.

    Which species concept defines a species primarily on the basis of observable anatomical characteristics, structural features, and body shape?

    • A) Biological species concept
    • B) Ecological species concept
    • C) Morphological species concept
    • D) Phylogenetic species concept
  3. 3.

    Which species concept defines a species in terms of its ecological niche, focusing on the unique set of environmental resources and habitat interactions that its members utilize?

    • A) Biological species concept
    • B) Morphological species concept
    • C) Ecological species concept
    • D) Phylogenetic species concept
  4. 4.

    Which species concept defines a species as the smallest group of individuals that share a common ancestor and form an independent branch on a phylogenetic tree?

    • A) Morphological species concept
    • B) Ecological species concept
    • C) Phylogenetic species concept
    • D) Biological species concept
  5. 5.

    Which of the following is a primary limitation of the biological species concept?

    • A) It cannot be evaluated in organisms that reproduce strictly asexually or in extinct taxa known only from the fossil record.
    • B) It relies primarily on visible anatomical similarity, making it ineffective at identifying cryptic species.
    • C) It fails when applied to sympatric populations that inhabit distinct microhabitats within the same geographic area.
    • D) It requires complete DNA sequence data to establish monophyletic lineages before boundaries can be recognized.

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