Lab 6 - PowerPoint PPT Presentation

1 / 36
About This Presentation
Title:

Lab 6

Description:

Growth habit: Unicellular myxamoebae (ingestive cells) ... Cell wall: None (a proteinaceous pellicle beneath the plasma membrane provides stiffness) ... – PowerPoint PPT presentation

Number of Views:209
Avg rating:3.0/5.0
Slides: 37
Provided by: Curtis59
Category:
Tags: lab | pellicle

less

Transcript and Presenter's Notes

Title: Lab 6


1
Lab 6
  • Various Protista

2
Dictyosteliomycota
  • Common name Cellular slime molds
  • Synonyms Acrasiomycota (in part)
  • Mode of nutrition Heterotrophic ingestive
  • Habitat Terrestrial moist decaying vegetation
  • Growth habit Unicellular myxamoebae (ingestive
    cells), multicellular dispersal structure
  • Cell wall None in myxamoebae, cellulose in
    sporangium

3
Dictyosteliomycota
  • Undulipodia (flagella) None
  • Food storage Glycogen
  • Clonal reproduction Mitosis of myxamoebae
    production of aplanospores for dispersal
  • Sexual reproduction Rare and poorly known
  • Representative genera Dictyostelium
  • Recognized by slugs, individual (not grouped)
    stalked sporangia

4
Dictyostelium
5
Myxomycota
  • Common name Plasmodial slime molds
  • Synonyms Mycetozoa
  • Mode of nutrition Heterotrophic ingestive
  • Habitat Terrestrial moist decaying vegetation
  • Growth habit Multinucleate single-cell
    plasmodium
  • Cell wall None
  • Undulipodia (flagella) One or two whiplash on
    aquatic haploid uninucleate cells otherwise none

6
Myxomycota
  • Food storage Glycogen
  • Clonal reproduction None
  • Sexual reproduction Diploid phase resembles
    diploid dominant haploid phase resembles
    unicellular
  • Representative genera Arcyria, Dictydium,
    Physarum, Stemonitis
  • Recognized by Plasmodium meiosporangia often
    clustered.

7
D Physarum plasmodium
Myxomycota
8
D Stemonitis
Myxomycota
9
A Stemonitis
Myxomycota
10
D Arcyria
Myxomycota
11
D Arcyria
Myxomycota
12
D Dictydium
Myxomycota
13
A Dictydium
Myxomycota
14
D Lamproderma
Myxomycota
15
D Lamproderma
Myxomycota
16
D Physarum
Myxomycota
17
A Lycogala
Myxomycota
18
Euglenophyta
  • Common name Euglenas
  • Synonyms None
  • Mode of nutrition Autotrophic green
    chloroplasts (secondary), or heterotrophic by
    ingestion
  • Habitat Freshwater
  • Growth habit Unicellular
  • Cell wall None (a proteinaceous pellicle beneath
    the plasma membrane provides stiffness)

19
Euglenophyta
  • Undulipodia (flagella) Whiplash one long for
    swimming, one short, confined to the vacuole
  • Food storage Paramylon
  • Clonal reproduction Mitosis by unicells
  • Sexual reproduction None known
  • Representative genera Euglena, Phacus
  • Recognized by Green but no cell wall, eyespot
    often prominent

20
U Euglena
Euglenophyta
21
D Euglena
Euglenophyta
22
Dinophyta
  • Common name Dinoflagellates
  • Synonyms Pyrrhophyta
  • Mode of nutrition Autotrophic brown
    chloroplasts (secondary), or heterotrophic by
    ingestion
  • Habitat Marine, freshwater
  • Growth habit Unicellular
  • Cell wall Cellulose or none

23
Dinophyta
  • Undulipodia (flagella) Ordinarily two
    whiplash, one in equatorial groove and one in
    longitudinal groove
  • Food storage Chrysolaminarin
  • Clonal reproduction Mitosis by unicells
  • Sexual reproduction Poorly known in many
    species, some with complex sexual cycles
  • Representative genera Ceratium, Gonyaulax,
    Noctiluca, Peridinium, Pfiesteria
  • Recognized by Grooves for flagella

24
A Peridinium
Dinophyta
25
A Noctiluca
Dinophyta
26
A Ceratium
Dinophyta
27
Rhodophyta
  • Common name Red algae
  • Synonyms None
  • Mode of nutrition Autotrophic red chloroplasts
  • Habitat Marine, freshwater
  • Growth habit Multicellular filamentous or
    plectenchyma multicellular crusts and films,
    rarely unicellular.
  • Cell wall Cellulose, galactans such as agar and
    carrageenan

28
Rhodophyta
  • Undulipodia (flagella) None (no basal bodies)
  • Food storage Floridean starch
  • Clonal reproduction aplanospores
  • Sexual reproduction Isomorphic alternation of
    generations with interpolated carposporophyte
    phase, oogamous
  • Representative genera Chondrus, Corallina,
    Polysiphonia, Porphyra
  • Recognized by Red plants no flagella
    cystocarps tetraspores

29
A Polysiphonia tetrasporophyte
Rhodophyta
30
A Polysiphonia male gametophyte
Rhodophyta
31
A Polysiphonia cystocarp
Rhodophyta
32
D Polysiphonia
Rhodophyta
33
D Various red algae
Rhodophyta
34
D carrageenan
Rhodophyta
35
D agar
Rhodophyta
36
D nori
Rhodophyta
Write a Comment
User Comments (0)
About PowerShow.com