Lab 5

Question 1

Roles of Fungi in Ecosystem

Answer 1

a. Used to improve characteristics of foods

b. Medicine, source of many important antibiotics

Question 2

Characteristics of Fungi

Answer 2

a. Cells are eukaryotic
b. All absorptive chemoheterotrophs
c. Non-motile
d. Unicellular to multicellular
e. Have hyphae and mycelium
f. Walls composed of chitin
g. Reproduce asexually
h. Most of their life cycle they are haploid

Question 3

How do Fungi get there nutrition

Answer 3

Fungi secrete hydrolytic enzymes into the surrounding substrate and then absorb the products of enzymatic degradation. Chemoheterotrophs, energy by taking in materials

Question 4

Body Plan for Fungi

Answer 4

a. Fruiting body
b. Mycelium
i. Hyphae: either septa or coenocytic

Question 5

Coenocytic

Answer 5

when all cells are fused together via mitosis, contains many nuclei, has continuous cytoplasm through filamentous body

Question 6

Septa

Answer 6

each filament is broken into cell like compartments by cross-walls have pores connecting each cell for nutrients to flow through

Question 7

Lichens

Answer 7

are stable associations between green algae and fungi or cyanobacteria and fungi. Algae and cyanobacteria in lichens are protected from drying by them. Fungus in return they provide sugars produced by photosynthesis

Question 8

Micorrhizae

Answer 8

fungus root, mycorrhizae and plants live together (symbiotic). Trees receive large amounts of nitrogen from mycorrhizal fungi. Plants transfer sugars and photosynthesis products to fungi.