ch 29 pt 2 Flashcards
How do biologists study fungi
By analyzing morhpholgical traits
what are the two growth forms of fungi
single celled forms ( yeasts) and multicellular (mycelia)
what is mycelium
body of fungus; composed of filaments called hyphae
A mycelium grows toward
food, dies when there is none
they can get very big if
food is abundant
what is hyphae (sing. hypha)
tiny filaments making up mycelium & reproductive structures
most have _ nuclei and _ cell wall
haploid, and chitin
what are the two types of cell wall
septate and coenocytic
what is septate wall
cross walls which divide the hyphae into cell-like compartments
what is coenocytic wall
hyphae which lack septa & are multinucleated
Mycelia Have a Large Surface Area
they have the _ of all multicellular organisms
Highest S.A. / Vol ratio
why is a hugh sa good and why is it bad
excellent for absorbing nutrients
(3) Prone to drying out - limits fungi to moist environment
Reproductive Structures are _ spores
haploiud spores
asexual spores
1 parent, genetically identical
(b) Many fungal species only reproduce asexually.
