Ch 31 - Fungi (1 slide per page)-1

Shutterstockcompic 34273630stock photo mold

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 00 cm2 surface area Figure 31.2 (Campbell et al.) 9 Fruiting Bodies are variable among groups Zygomycota Ascomycota sporangiophore conidiophore Ascomycota Basidiomycota Ascocarp w/ Asci Asci w/ ascospores 10 Morphology of Multicellular fungi • Cell walls = mostly chitin • Chitin is a nitrogen containing polysaccharide derived from glucose • Very strong for support • Found where else? Figure 31.3 (Campbell et al.) 11 Morphology of Multicellular fungi • Septate spp - hyphae divided into cells by septa • Aseptate spp - cells are undivided Septate hyphae Aseptate hyphae Figure 31.3 (Campbell et al.) 12 Morphology of Multicellular fungi In septate hypha, pores in septa may allow flow of: • cytoplasm, • mitochondria • ribosomes • even nuclei! Are fungi really multicellular??? Pore closure separating cells allows cells to perform different functions e.g. develop into a reproductive structure Nutrition 13 All fungi are absorptive heterotrophs • NO chlorophyll • NO fixing of carbon from CO2 • Enzymes digest food outside body 3 ways which fungi obtain nourishment: 1. Saprobic • from nonliving or decaying organic matter 2. Parasitic • from living hosts in or on which they live 3. Predatory • by capturing live animals 14 Nutrition Most secrete hydrolytic enzymes that break down organic macromolecules (living and dead) to absorbable compounds Absorb digested compounds Nutrition 15 Some extract absorbable nutrients directl...
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online