ch 18

Question 1

what domain are protists in?

Answer 1

eukarya

Question 2

are protists unicellular or multicellular?

Answer 2

mostly unicellular but few are multicellular

Question 3

Autotroph protists

Answer 3

algae (contain chloroplasts)

Question 4

Heterotroph protists

Answer 4

Protozoa (all unicellular) & Molds

Question 5

What are the 6 types of algae?

Answer 5

Euglenoids, Dinoflagellates, Diatoms, Brown Algae, Red Algae, Green Algae

Question 6

Parts of euglenoid

Answer 6

Flagella, no cell wall (membrane has protein bound pellicle for support and protection), orange eyespot

Question 7

What color are euglenoids and where are they found?

Answer 7

Grass-green in color, freshwater

Question 8

Are euglenoids autotrophic or heterotrophic?

Answer 8

Can be both, overlaps with zooflagellate protozoa

Question 9

Dinoflagellates are responsible for what in Florida?

Answer 9

Red tide

Question 10

Dinoflagellate color and location

Answer 10

Red orange or brown, found in marine or freshwater

Question 11

Dinflagellate structure

Answer 11

unicellular, flagellated (spins through water), can be bioluminescent, two grooves in cell which are perpendicular to each other, bizzare shaped

Question 12

Are dinoflagellates heterotrophic or autotrophic?

Answer 12

Can be either, overlap with zooflagellate protozoa

Question 13

Diatomaceous Earth

Answer 13

fossilized diatoms which can be used for silver polish, swimming pool filters, and toothpaste

Question 14

2 interesting characteristics of diatoms cell walls

Answer 14

cell walls that are in two pieces that fit together like a box and a lid, contains silica which makes it gas like

Question 15

Diatom structure

Answer 15

non-flagellated, unicellular, small pores in their cell walls which form delicate patterns

Question 16

What is the most abundant algae on Earth that supplies Earth with much of its oxygen?

Answer 16

Diatoms

Question 17

What is brown algae commonly known as?

Answer 17

Common seaweed (includes Giant Kelp)

Question 18

What does brown algae provide us with?

Answer 18

Iodine

Question 19

Are brown algaes unicellular or multicellular?

Answer 19

Simple multicellular

Question 20

What is red algae commonly known as?

Answer 20

Marine seaweed

Question 21

Red algae contains what pigments and what wavelengths does it absorb?

Answer 21

Photosynthetic pigments, absorbs red and blue wavelengths

Question 22

3 things red algae is known for

Answer 22

1. mostly filamentous, but sticks together to look multicellular
2. be more delicate than brown algae, grows in lace-like patterns
3. have gel-like cell wall byproducts which are used for thickenings & cosmetics

Question 23

What is agar?

Answer 23

Comes from red algae and used as a medium to grow cultures in microbiology

Question 24

Why is green algae different from the rest of the algae?

Answer 24

they are the ancestor to the ants in the plant kingdom

Question 25

3 similarities between algae and the true plants

Answer 25

-cellulose in cell walls -store food as starch -contain chlorphyll a &b

Question 26

Green algae ranges from

Answer 26

unicellular, to colonial, to filamentous, to simple multicellular

Question 27

Where does green algae occur?

Answer 27

freshwater, marine waters, and terrestrial

Question 28

What is the most common autotrophic component of lichen?

Answer 28

Green algae

Question 29

Spirogyra

Answer 29

a species that forms a filament, the cells stick together end to end and theres a spiraling chloroplasts (green algae)