ch. 26- protists

members of which protist group is one of the fossilized deposits in the unique geological formation of the white cliffs of dover

foraminiferans

members of the _____ are thought to have given rise to plants

green algae

pseudopodia are used by amoeba for ingesting food as well as for

locomotion

which eukaryotic organelles likely arose from symbiotic relationships between larger cells and bacteria

mitochondria and chloroplasts

which protist group typically contains of amoeboid cells surrounded by a hard outer shell through which cytoplasmic projections extend

rhizarians

foraminiferans are rhizarians

true

the archaeplastids include the red algae and the green algae

true

the stramenopiles include water molds, diatoms, golden algae, and brown algae

true

most protists are _____, with each cell forming a complete organism capable of performing all the function characteristics of life

unicellular

the surface of a paramecium is covered with thousands of short, hair-like _______

cilia

which protist group is characterized by having a micronucleus and a macronucleus

ciliates

some protists consist of a single cell with multiple nuclei. this condition is known as

coenocytic

in primary endosymbiosis, an ancient eukaryotic cell engulfed a _______, which survived and evolved into a chloroplast

cyanobacterium

which algal group contains individuals that are typically unicellular and form siliceous shells

diatoms

members of which group are known to form blooms known as red tides

dinoflagellates

which protist clade is characterized by their greatly modified mitochondria

excavates

which protist group contains the organism trypanosoma, a colorless parasite that can cause african sleeping sickness

excavates

what is the translation of "pseudopodia", a characteristic of the amoebas

false feet

red tides are caused by red algae

false- dinoflagellates

land plants are thought to have arisen most directly from a red algal ancestor

false- green algae

within ciliates, what do the micronuclei control

reproduction

explain why chanoflagellates are thought to be of particular evolutionary importance

-closest relative to animals -striking resemblance to collar cells in sponges -evidence supporting the close relationship between choanoflagellates and animal includes comparative DNA sequence data of mitochondrial and nuclear genes

members of the ____ move via pseudopia

amoebozoa

name the structure that allows motility in the following groups: amoebozoa, excavates, and ciliates

amoebozoa: pseudopodia excavates: flagella ciliates: cilia

which type of protist is responsible for malaria in humans, parasitic to both humans and mosquitoes

apicomplexans

most protists are

aquatic

amoebozoans move by means of flagella

false- pseudopodia

provide three diseases caused by protozoa. include the casual organism, the group in which it is classified, and its means of transmission when possible

unikonts, amoebozoa-- entamoeba histolytics, amoebic dysentery, transmitted via contaminated water excavates, trypanosomes-- trypanosoma causes african sleeping sickness, transmitted via tsetse flies chromalveolates, alveolates, apicomplexans-- plasmodium causes malaria, transmitted via a mosquito