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Campbell Biology Chapter 31 | Questions And Answers Latest {} A+ Graded | 100% Verified $13.48   Add to cart

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Campbell Biology Chapter 31 | Questions And Answers Latest {} A+ Graded | 100% Verified

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Campbell Biology Chapter 31 | Questions And Answers Latest {2024- 2025} A+ Graded |
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Fungi are - Heterotrophs that feed by absorption



How many species of fungi have been described - about 100,000 species of fungi have been described



How many species of fungi are estimated to exist - 1.5 million species of fungi



Fungi share which key traits - the way in which they derive nutrition



Fungi use enzymes to - break down a large variety of complex molecules into smaller organic
compounds



The versatility of these enzymes contributes to - fungi's ecological success



Fungi exhibit diverse lifestyles, name them - -Decomposers

-Parasites

-Mutualists



The most common Body Structure - multicellular filaments and single cells (yeasts)

-Some species grow as either filaments or yeasts; others grow as both (dimorphic fungi)



Yeast is - term for a unicellular fungus



The morphology of multicellular fungi enhances - their ability to absorb nutrients



Fungi consist of - mycelia (mass of hyphae), networks of branched hyphae (hypha - singular) adapted for
absorption

, Fungal cell walls contain - chitin



Most fungi have hyphae divided into cells by - septa, with pores allowing cell-to-cell movement of
organelles



Coenocytic fungi lack - septa and have a continuous cytoplasmic mass with hundreds or thousands of
nuclei



Some unique fungi (Mycorrhizal Fungi) have specialized hyphae called - haustoria that allow them to
penetrate the tissues of their host



Mycorrhizae are - -mutually beneficial relationships between fungi and plant roots

-deliver phosphate ions and minerals to plants

-Most vascular plants have mycorrhizae

-colonize soils by the dispersal of haploid cells called spores



Ectomycorrhizal fungi - form sheaths of hyphae over a root and also grow into the extracellular spaces of
the root cortex



Arbuscular mycorrhizal fungi - extend hyphae through the cell walls of root cells and into tubes formed
by invagination of the root cell membrane



Fungi propagate themselves by - producing vast numbers of spores, either sexually or asexually (or both)



Fungal nuclei are normally - haploid, with the exception of transient diploid stages formed during the
sexual life cycles



Sexual reproduction requires the fusion of - hyphae from different mating types



Fungi use sexual signaling molecules called - pheromones to communicate their mating type

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