Chapter Questions
Microbial eukaryotes with flagella$a$ appear in several clades.$b$, are all algae.$c .$ all have pseudopods.$d$ are all colonial.$e .$ are never pathogenic.
Which statement about eukaryotic phytoplankton is not true?$a.$ Some are important primary producers.$b.$ Some contributed to the formation of petroleum.$c. $Some form toxic "red tides."$d.$ Some are food for marine animals.$e .$ They constitute a clade.
Apicomplexans$a.$ possess flagella.$b. $possess a glassy shell.$c$ are all parasitic.$d$. are algae.$e .$ include the trypanosomes that cause sleeping sickness.
The ciliatesa. move by means of short flagella.b. use amoeboid movement.$c .$ include Plasmodium, the agent of malaria.d. possess both a macronucleus and micronuclei.$e .$ are autotrophic.
The chloroplasts of photosynthetic protists$a$ are structurally identicalb. gave rise to mitochondria.$c$ are all descended from a once free-living cyanobacterium.$d$ all have exactly two surrounding membranes.$e .$ are all descended from a once free-living red alga.
Which statement about the brown algae is not true?a. They are all multicellular.b. They use the same photosynthetic pigments as do land plants.c. They are almost exclusively marine.d. A few are many meters in length.$e .$ They are stramenopiles.
Which statement about the chlorophytes is not true?a. They use the same photosynthetic pigments as do land plants.b. Some are unicellular.$c .$ Some are multicellular.$d .$ All are microscopic in size.e. They display a great diversity of life cycles.
The red algae$a$ are mostly unicellular.$b$. are mostly marine.$c .$ owe their red color to a special form of chlorophyll.$d$. have flagella on their gametes.$e$ are all heterotrophic.
The plasmodial slime molds$a$. form a plasmodium that is a coenocyte.$b$. lack fruiting bodies.$c .$ consist of large numbers of myxamoebas.$d .$ consist at times of a mass called a pseudoplasmodium.$e .$ possess flagella.
The cellular slime moldsa. possess apical complexes.b. lack fruiting bodies.$c .$ form a plasmodium that is a coenocyte.d. have haploid myxamoebas.$e .$ possess flagella.