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Brooks Biodiversity Unit 2 Exam UPDATED ACTUAL Exam Questions and CORRECT Answers £8.18
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Brooks Biodiversity Unit 2 Exam UPDATED ACTUAL Exam Questions and CORRECT Answers
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Brooks Biodiversity Unit 2 Exam UPDATED ACTUAL Exam Questions and CORRECT Answers Kingdom Fungi Characteristics - CORRECT ANSWER- Decomposers - Significant recyclers Heterotrophs w extracellular digestion Chitin-based cell wall Saprobes - CORRECT ANSWER- nutrients from dead organic matter ...

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  • October 13, 2024
  • 17
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • brooks biodiversity
  • brooks
  • biodiversity
  • brooks biodiversity unit 2 exam
  • brooks biodiversity unit 2

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Brooks Biodiversity Unit 2 Exam
UPDATED ACTUAL Exam Questions and
CORRECT Answers
Kingdom Fungi Characteristics - CORRECT ANSWER✔✔- Decomposers - Significant
recyclers
Heterotrophs w extracellular digestion
Chitin-based cell wall


Saprobes - CORRECT ANSWER✔✔- nutrients from dead organic matter


Symbionts - CORRECT ANSWER✔✔- nutrients from living organic matter



Thallus/Mycelium - CORRECT ANSWER✔✔- body of fungal organism



Hyphae - CORRECT ANSWER✔✔- filaments that make up thallus/mycelium
can be septate or coenocytic


Septate - CORRECT ANSWER✔✔- cell walls partition cells (think separate)



Coenocytic - CORRECT ANSWER✔✔- no cell wall partitions (think co-, together)



Haustoria - CORRECT ANSWER✔✔- Specialized hyphae that release exoenzymes for
extracellular digestion


Fungus are typically in what state? Diploid or Haploid? - CORRECT ANSWER✔✔-
HAPLOID


Fungi Reproduction - CORRECT ANSWER✔✔- Can produce both asexually and sexually
Fertilization (Syngamy) occurs initially with fusion of cytoplasm (Plasmogamy)

,Usually, mitotic cell division begins BEFORE nuclei fuse (karyogamy)
Dikaryotic stage - transition ploidy (n+n)
After karyogamy, meiosis can occur to produce genetically unique spores.
No male or female, just + and -.


Sporangium - CORRECT ANSWER✔✔- generic name for spore producing structure



Phylum Zygomycota - CORRECT ANSWER✔✔- Kingdom Fungi
Spores dispersed by air
Hyphae w/ few or no septa
No female or male, but + or -.
Sexually - Zygote (2n) engages in meiosis in the zygosporangium producing genetically
unique zygospores
Asexually - producing spores from sporangia mitotically, genetically identical
Ex: Rhizopus - Black bread mold


Rhizopus - CORRECT ANSWER✔✔- Phylum Zygomycota
Black bread mold


Phylum Ascomycota - CORRECT ANSWER✔✔- Kingdom Fungi
Largest class
free-living and symbiotic
spores dispersed by air
Septate hyphae w/ perforations
Ascus/spore sac forms ASCOCARP
Asexually - Conidia (spores) pinch off from conidiophores
Sexually - 2 Hyphae fuse to form n+n structure
Plasmogamy, already start dividing mitotically
Ascoscarp (structure that produces spores) pops up out of ground via mitosis
Karyogamy - nuclei fuse, now diploid

, Meiosis occurs - 4 genetically unique ascospores
Mitosis occurs - 8 haploid ascospores, 4 of which are unique


Ex: Peziza, Saccharomyces/Yeast, Claviceps & Rye ergot, Penicillium (Penicillin), Morels &
Truffles, Cheese, Wine & Bread


Mitosis can occur in ANY Ploidy (True or False) - CORRECT ANSWER✔✔- TRUE



How many different kinds of spores are found in an Ascus? - CORRECT ANSWER✔✔- 4
genetically unique. 8 total.


Peziza - CORRECT ANSWER✔✔- Phylum Ascomycota
Cup/sac fungus


Saccharomyces "Yeast" - CORRECT ANSWER✔✔- Phylum Ascomycota
Unicellular


Claviceps "Rye Ergot" - CORRECT ANSWER✔✔- Phylum Ascomycota
Poisonous, can cause rye ergot poisoning
Can occur with too much moisture


Penicillium - CORRECT ANSWER✔✔- Phylum Ascomycota
Penicillin
First antibiotic


Morels & Truffles - CORRECT ANSWER✔✔- Phylum Ascomycota
Considered a delicacy, expensive


Cheese, wine & Bread - CORRECT ANSWER✔✔- Phylum Ascomycota
Yeast fungi present. Fermentation used for taste, alcohol and carbon dioxide bubble. Blue
cheese - fungal hyphae

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