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Biology · BIOLOGICAL CLASSIFICATION

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How do Ascomycetes and Phycomycetes differ fundamentally regarding the origin and location of their asexual spore production?

  1. Ascomycetes produce asexual conidia exogenously on conidiophores; Phycomycetes produce asexual spores endogenously inside a sporangium
  2. Ascomycetes form asexual sporangiospores endogenously; Phycomycetes form conidia exogenously on conidiophores
  3. Both classes produce asexual spores strictly inside thick-walled zygospores endogenously
  4. Ascomycetes form asexual spores endogenously inside asci; Phycomycetes form asexual spores exogenously on basidia

Correct answer · Option 1

Ascomycetes produce asexual conidia exogenously on conidiophores; Phycomycetes produce asexual spores endogenously inside a sporangium

Explanation

In Ascomycetes, asexual conidia are produced exogenously on conidiophores. In Phycomycetes, asexual spores (zoospores or aplanospores) are produced endogenously within a sporangium.

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