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BISC 120 > Lecture 25 - protists II (SI) > Flashcards

Lecture 25 - protists II (SI) Flashcards

1
Q

Alveolates

A
  • unicellular with subcellular cavities

- classified with molecular systematics

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2
Q

Alveolates subgroups

A
  1. Dinoflagellates
  2. Apicomplexans
  3. Ciliates
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3
Q

Rhizaria

A

Use pseudopodia to move and feed

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4
Q

Rhizaria subgroups

A
  1. Radiolarians
  2. Forams
  3. Heliozoa
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5
Q

Stramenopiles

A
  • fine hairlike projections on the flagella (mostly in reproductive cells)
  • both heterotrophs and autotrophs in this group
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6
Q

Stramenopiles subgroups

A
  1. Oomycetes
  2. Brown algae
  3. Diatoms
  4. Golden algae
  5. Heterokonts
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7
Q

Archaeplastida

A

-contains land plants, their ancestors, and relatives

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8
Q

Archaeplastida subgroups

A
  1. Charophytes
  2. Rhodophyta
  3. Chlorophytes
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9
Q

Amoebozoans of Unikont

A

Bridge between unicellular and multicellular

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10
Q

Amoebozoans of Unikont subgroups

A
  1. Slime molds
  2. Rhizopods
  3. Cellular slime molds
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11
Q

Opisthokonts of Unikonts

A

Group that connects protists with animals

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12
Q

Opisthokonts of Unikonts

A
  1. Choanoflagellates
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13
Q

What are cilia used for in ciliates?

A

feeding and motion

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14
Q

Micro vs Macro nuclei in ciliates

A

micro (used for reproduction)

macro (used for day to day function and metabolism)

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15
Q

What happens during reproduction of Ciliates?

A

-micronuclei swapped between two ciliates
-fuse together after conjugation
-mitosis to produce new macro-nucleus, binary fission, 4 daughter cells
E

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16
Q

What is an example of Ciliates

A

paramecium

17
Q

What are 4 characteristics of Diatoms?

A
  1. unicelluular
  2. asexual division with sexual phase (size issue)
  3. wall made silica
  4. responsible for 50% of photosynthesis in ocean
18
Q

What is the shoebox concept?

A

asexual smaller part of the cell reproduces and makes second copy of the smaller size

19
Q

Where are brown algae common?

A

temperate waters with lots of nutrients

20
Q

What do brown algae create?

A

kelp forests using floats to raise blades to surface

21
Q

Are brown algae uni or multicellular?

A

unicellular

22
Q

How do brown algae reproduce?

A

alterations by generations

23
Q

examples of brown algae

A
  • bull kelp

- giant kelp

24
Q

3 characteristics of golden algae

A
  1. biflagellate
  2. some are mixotrophic
  3. unicellular (mostly
25
Q

4 characteristics of Forams

A
  1. multi-chamber, porous shells made of calcium CaCO3
  2. abundant in plankton
  3. fossilize easiliy
  4. for symbiosis with algae
26
Q

2 characteristics of Heliozoa

A
  1. fused siliceous or chitinous plates

2. live in freshwater

27
Q

3 characteristics of Radiolarian

A
  1. mostly actinpods
  2. have pseudopodia that extend out of pores
  3. siliceous skeletons accumulate in ocean floor
28
Q

3 characteristics of Oomecytes

A
  1. extensive SA
  2. fine network of coenocytic hyphae
  3. water molds, white rusts, downy mildews
29
Q

3 characteristics of Rhizopoda

A
  1. pseudopodia to feed + move
  2. free living heterotrophs
  3. Entamoeba histolytica, causes amoeboid dysentery
30
Q

What are Mycentozoa

A

slime molds or fungus animals

31
Q

3 characterisitics of Mycentozoa

A
  1. bridge gap between unicellularity + multicellularity
  2. plasmodial slime molds
  3. cellular slime mold
32
Q

What does a cellular slime mold form when food is scarce?

A

slug

33
Q

What is the primary life stage of cellular slime mold?

A

haploid

34
Q

4 characteristics of Rhodophyta

A
  1. No flagellated stage
  2. red color = phycoerythrin
  3. most common seaweeds in warm coastal waters of tropical oceans
  4. formed by endosymbiosis
35
Q

What are 2 species of green algae?

A
  1. chlorophytes

2. charophytes

36
Q

What are the 3 forms of green algae

A
  1. colonies of individual cells (volvox)
  2. multinucleate filaments (Caulerpa)
  3. formation of true multicellular forms by cell division/differentiation (Ulva)
37
Q

2 characteristics of Choanoflagellates

A
  1. link to sponges

2. exist as single cells or huge colonies

BISC 120 (33 decks)

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