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Symbiosis (mutualism, commensalism, parasitism)

Biology • Communities & Interactions • Knowledge-Based • 5 questions

Symbiosis (mutualism, commensalism, parasitism) Knowledge-Based Download PDF

Biology · Ecology · Biology · Communities & Interactions

5 Biology practice questions on Symbiosis (mutualism, commensalism, parasitism). Questions that assess core concepts and understanding.

Questions

  1. 1.

    Which of the following biological associations represents an example of mutualism?

    • A) A tapeworm absorbing digested nutrients from a mammal's digestive tract
    • B) Barnacles attaching to the skin of a whale to gain access to nutrient-rich water currents
    • C) Mycorrhizal fungi exchanging soil minerals for photosynthetic sugars with plant roots
    • D) Mistletoe penetrating the vascular tissue of a host tree to extract water and solutes
  2. 2.

    In all three major forms of symbiosis—mutualism, commensalism, and parasitism—the first participating organism derives a positive fitness benefit (+). Which statement accurately describes the effect of each interaction on the second organism?

    • A) The second organism benefits (+) in mutualism, is harmed (-) in commensalism, and remains unaffected (0) in parasitism.
    • B) The second organism remains unaffected (0) in mutualism, benefits (+) in commensalism, and is harmed (-) in parasitism.
    • C) The second organism is harmed (-) in mutualism, remains unaffected (0) in commensalism, and benefits (+) in parasitism.
    • D) The second organism benefits (+) in mutualism, remains unaffected (0) in commensalism, and is harmed (-) in parasitism.
  3. 3.

    Which symbiotic relationship is characterized by an intimate, prolonged association in which one organism lives on or inside a host organism, deriving nutrients and metabolic resources at the physiological expense of the host?

    • A) Mutualism
    • B) Commensalism
    • C) Parasitism
    • D) Amensalism
  4. 4.

    In community ecology, which type of symbiotic interaction is characterized by both coexisting species experiencing an increase in nutritional, protective, or reproductive fitness?

    • A) Commensalism
    • B) Amensalism
    • C) Parasitism
    • D) Mutualism
  5. 5.

    In an ecological community, which type of symbiotic interaction occurs when one species derives a benefit while the other species is unaffected, experiencing neither harm nor benefit?

    • A) Commensalism
    • B) Mutualism
    • C) Parasitism
    • D) Predation