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chap 21 - 1 A 2 B 3 A 4 B 5 B 6 C 7 C 8 D 9 D 10 A 11 Both...

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1. A 2. B 3. A 4. B 5. B 6. C 7. C 8. D 9. D 10. A 11. Both cell walls contain chitin 12. Hyphae are think filaments that compose multicellular fungi. Mycelia are bodies of multicellular fungi that are composed of many hyphae tangled together into a thick mass. 13. Sporanigiophores are specialized hyphae that contain sporangia structures which spread spores. 14. Fungi produce dry, weightless spores that scatter easily in the wind, so these spores can spread easily. 15. The spores must land in a favorable environment. There must be the proper combination of temperature, moisture, and food for the spores to row. 16. Fungi are classified according to their structure and method of reproduction. 17. Hyphae from different mating types fuse to produce gamete-forming structures. These gametangia fuse, and zygotes form in a zygiospore. The zygiospores eventually germinates and a sporangium emerges and reproduces asexually. 18. Rhizoids are rootlike hyphae that penetrate the bread’s surface. The stemlike hyphae that run across the bread are stolons.
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