ch 26 protist

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 (supergroups) is characterized by their greatly modified mitochondria

excavates

What is the endosymbiotic theory?

explains how eukaryotic cells may have evolved from prokaryotic cells

unikonts also have a blank that has major evolutionary significans

triple gene

cells that have a single flagellum or are amoebas with no flagella are

unikonts

actinopods are mostly marine plankton rhizarians with long, filamentous cytoplasmic projections called

axopods

excavates

-move via flagella -have a feeding groove -heterotrophic and lack mitochondria

rhizarians

A monophyletic but diverse group of amoeboid cells

unikonts

A supergroup composed of certain amoebas, plasmodial slime molds, cellular slime molds, choanoflagellates, fungi, and animals

archaeplastids

Monophyletic group that includes red algae, green algae, and land plants, which are in a separate kingdom

chromalevolates

A supergroup composed of extremely diverse protists with few shared characters

What is a protist in the most general sense?

An informal group of primarily aquatic eukaryotic organisms with diverse body forms, types of Reproduction, modes of nutrition, and lifestyles.

What are the different body plans, modes of nutrition, habitats and reproductive lifestyles?

An informal group of primarily aquatic eukaryotic organisms with diverse body forms, types of reproduction, modes of nutrition, and lifestyles-Algae, water molds, slime molds, protozoa

What are some key structures of a basic free living unicellular protist?

Protist cells may contain a single nucleus or many nuclei; they range in size from microscopic to thousands of meters in area. Protists may have animal-like cell membranes, plant-like cell walls, or may be covered by a pellicle.

What are the modern tools being used to sort out the protist kingdom?

The protists can be classified into one of three main categories, animal-like, plant-like, and fungus-like. Grouping into one of the three categories is based on an organism's mode of reproduction, method of nutrition, and motility.

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

apicomplexans

most protist are

aquatic

red algae, green algae, and land plants are collectively called

archawplastids

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

mitochondria and chloroplasts