Review 3 Flashcards Preview

BIO 102 Lab > Review 3 > Flashcards

Flashcards in Review 3 Deck (26)
Loading flashcards...
1
Q

What do most algae contribute to the ecosystem in which they live?

A

primary producers

2
Q

What is unique about multicellular algae?

A

have tissues

3
Q

Describe dinoflagellates.

A

two flagella,

cause red tide

4
Q

What type of cell wall is formed by diatoms?

A

silica

cell walls called valves

5
Q

What storage molecules assist diatoms with floatation?

A

oil

6
Q

Describe Euglena.

A

rounded flagellated anterior end,
pointed posterior,
pellicle (protein strips) under plasma membrane,
eyespot

7
Q

How is Volvox unique?

A

daughter colonies

8
Q

Name some of the types of brown algae.

A

Laminaria (kelp),

Sargassum

9
Q

How are brown algae used in foods?

A

as thickeners

10
Q

Describe red algae.

A

make chlorophyll a,
cellulose cell walls,
lack centrioles,
store modified starch

11
Q

Why does Protococcus grow on the north side of trees and buildings?

A

to avoid drying

12
Q

What is red tide? Why is it dangerous? What kind of damage does it cause?

A

dinoflagellates release toxic wastes,
massive fish kills,
toxins concentrate in the bodies of shellfish making them dangerous for human consumption

13
Q

What types of products contain diatomaceous earth?

A

toothpaste, pool filters, polishes, etc.

14
Q

What guides euglenoids toward light?

A

eyespot

15
Q

How does Volvox reproduce asexually?

A

daughter colonies

16
Q

What form of colony is formed by Spirogyra?

A

filamentous

grouped in a thread-like pattern

17
Q

How does Spirogyra reproduce sexually?

A

form a conjugation tube

18
Q

Where is Ulva found?

A

salt/brackish water along the coast

19
Q

What types of organisms eat Ulva?

A

manatee, sea slugs, humans, etc.

20
Q

What is the purpose of air bladders?

A

keep the photosynthetic parts of the algae in sunlight

21
Q

Which type of algae has air bladders?

A

Sargassum

22
Q

What type of light is used by red algae and where are they found?

A

blue light,

deep water

23
Q

resting stage, zygote that formed a thick cell wall

A

zygospore

24
Q

root-like, disc shaped structure that attaches the organism to rocks/substrate

A

holdfast

25
Q

stem-like, between the holdfast and the broad flat blade of brown algae

A

stipe

26
Q

leaf like structure of Ulva, known as “sea lettuce”

A

blade