Chapter 25

Question 1

Protists are classified in kingdom Protista based on what?

Answer 1

the fact they are not clearly fungi, plant, or animal

Question 2

Protists are thought to have evolved over time from a larger prokaryote engulfing a smaller one until they were unique and separate organisms. This characteristic is termed ____.

Answer 2

endosymbiosis

Question 3

Protists are considered to be the msot diverse kingdom in the biological world for what reasons?

Answer 3

they have many different body plans; they exhibit many different types of movement; they obtain food in many different ways

Question 4

Colonial unicellular organisms can do what?

Answer 4

form a colony with areas of the colony minimally specialized to perform specific functions

Question 5

Most protozoans are what?

Answer 5

heterotrophic

Question 6

The internal flowing of an organism’s cytoplasm is called what?

Answer 6

cytoplasmic streaming

Question 7

The limestone formation on the floor of the ocean is thought to have developed from what?

Answer 7

dead protozoans

Question 8

The species radiolaria is classed in the subphylum ___.

Answer 8

mycetozoa

Question 9

Which organism has more than one nuclei specialized for reproduction

Answer 9

paramecium

Question 10

Which phylum of protist has no means of locomotion in adult form?

Answer 10

apicomplexa

Question 11

The phylum of protists that has a specialized group of organelles used to more easily gain entrance to host cells and tissues is what?

Answer 11

apicomplexa

Question 12

Which phylum of protist kills more humans than any other group of pathogens?

Answer 12

apicomplexa

Question 13

Name an example of filamenous algae

Answer 13

spirogyra

Question 14

What are the structures in algae that help synthesize and store starch and also aid in photosynthesis?

Answer 14

pyrenoids

Question 15

pigments that trap light in green algae are called what?

Answer 15

chlorophyll

Question 16

phylum phaeophyta contains the pigment ___, which gives it its brown color.

Answer 16

fucoxanthin

Question 17

Diatoms are unicellular protists from which phylum?

Answer 17

bacillariophyta

Question 18

Which phylum of protists is responsible for producing red tide?

Answer 18

dinoflagellata

Question 19

Which phylum of protists stores energy as oil and may have played a role in the formation of early petroleum deposits?

Answer 19

chrysophyta

Question 20

protists from the phylum Myxomycota are also known as what?

Answer 20

plasmodial slime molds

Question 21

A plasmodial slime mold will generally form a fruiting body when what happens?

Answer 21

food and water become scarce

Question 22

This phylum of protists has both spores and gametes with flagella.

Answer 22

chytridiomycota

Question 23

What is the algae that forms the base of all marine food chains?

Answer 23

phytoplankton

Question 24

What is a pyrenoid?

Answer 24

a protein body in the chloroplasts of algae and hornworts that is involved in carbon fixation and starch formation and storage

Question 25

Most sarcomastigophores are what?

Answer 25

parasites

Question 26

Why are the plantlike protists classified as protists and not plants?

Answer 26

they have no roots, stems, or leaves

Question 27

Paramecia reproduce secually by ___.

Answer 27

conjugation

Question 28

entamoeba histolytica

Answer 28

sarcodina

Question 29

flulike symptoms

Answer 29

cryptosporidium

Question 30

sleeping sickness

Answer 30

trypanosoma

Question 31

malaria

Answer 31

plasmodium

Question 32

toxoplasmosis

Answer 32

toxoplasma gondii