Biology Chapter 21 Protists and Fungi

protists

eukaryotes that are not members of the plant, fungi, or animal kingdoms

pseudopod

projection of cytoplasm

amoeboid movement

movement by changing shape

cilia

short, numerous hair-like structures supported by microtubules

flagellum

long and one/ two per cell, and moves in a wavelike motion

passive movement

many protists use air and water currents to move them

spores

reproductive cells

conjugation

a process in which 2 organisms exchange genetic material and increase of genetic diversity before going through asexual reproduction

alternation of generations

life cycle that alternates between a diploid and haploid phase

sporangium

spore capsule in which haploid spores are produced by meiosis

micronucleus

reserve copy" of genes

macronucleus

day-to-day activities

symbiotic relationships

relationship in which 2 organisms live closely together

mutalistic

both organisms benefit

parasitic

one organism benefits and the other is harmed

chitin

polymer of modified sugars

hyphae

thin filaments of which multicellular fungi are composed

cross walls

divide hyphae into "cells" but still have openings for cytoplasm and organelles to pass through

mycelium

composed of many hyphae tangled together in thick mass

fruiting body

reproductive structure of a fungus growing from mycelium

fairy rings

mushrooms growing in circles : one mycelium many fruiting bodies

fungi as decomposers

Fungi are efficient decomposers of organic material including cellulose and lignin

fungi as parasites

parasite fungi can cause serious plant and animal diseases by disrupting homeostasis

lichens

mutalistic relationship

mycorrhizae

relationship between fungi and plant

Two ways protists get their energy

photosynthetic, heterotrophic

Different ways protists consume

amoebas, ciliates, slime molds, and water molds