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9 Cards in this Set
- Front
- Back
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Compare cellular and plasmodial slime molds? |
Both form large single structures. |
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Contrast cellular and plasmodial slime molds? |
Cellular slime molds -uninucleate. -asexual reproduction -cAMP aggregation of single cells coming together Plasmodial slime molds -multinucleate -asex and sex reproduction -cytoplasmic streaming of a single cell branching out. |
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What phylum are slime molds? |
Amoebozoa |
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Cellular Slime Molds |
typical euks resembling amoeba. live and grow by ingesting fungi and bacteria by phagocytosis. in unfavorable conditions they aggregate together by release of cyclic AMP. aggregation forms a stalk and spore cap upon which amoeba form spores. |
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Plasmodial Slime Molds |
mass of protoplasm w/ many nuclei. mass of nuclei is called plasmodium. it uses muscles to move as one unite ingesting bacteria and organic material. |
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How do cellular and acellular slime molds differ? |
Cellular slime molds are uninucleate and use cAMP to aggregate together but remain essentially unicellular. Acellular slime molds are multi-nucleated and form a giant mass of protoplasts using cytoplasmic streaming. |
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Cytoplasmic streaming |
laboratory observation in which protoplasm within plasmodium moves and changes direction distributing nutrients evenly throughout. |
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Life Cycle of Plasmodial Slime Mold |
-ASEXUAL
1. Multinucleate plasmodium forms 2.Cytoplasmic streaming 3.Plasmodium separates into groups of protoplasts. 4.Each group forms sporangia stalk. 5. Spores develop into sporangia 6. Nuclei in spores goes through meiosis forming gametes. 7. Spores released. -SEXUAL 8. Gamete germinates from spore 9. Haploid gametes fuse producing zygote diploid cells again. 10. Zygote develops through nuclear division and cel growth. |
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Why are slime molds classified as amoeba not fungi? |
Because the slime molds move and lack chitin in their cell walls. |
