Reproduction In Plant!. a plant can reproduce sexually and asexually.
Cnidarian Reproduction Asexually – budding (polyp form) Sexually –have separate male and female...
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Transcript of Cnidarian Reproduction Asexually – budding (polyp form) Sexually –have separate male and female...
![Page 1: Cnidarian Reproduction Asexually – budding (polyp form) Sexually –have separate male and female medusae that produce gametes that join through external.](https://reader035.fdocuments.in/reader035/viewer/2022062404/55159401550346a1418b5bb0/html5/thumbnails/1.jpg)
Cnidarian Reproduction
Asexually – budding (polyp form)Sexually –have separate male
and female medusae that produce gametes that join through external fertilization to produce polyps.
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Flatworms - Platyhelminthes
Bilateral Symmetry Free-living in freshwater or
parasitic in a hostHas all three layers (endoderm,
mesoderm, ectoderm)Acoelomate – no body cavity.
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An Important Group
Many nasty parasitic infections.
DugesiaTapeworms
Flukes
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Flatworm Feeding
Free living flatworms are scavengers.
Parasitic flatworms use specialized structures (usually with hooks) to attach to a host.
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Respiration & Excretion
Excretion - Flame cells remove excess water
Respiration - Oxygen diffuses into body cells directly.
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Flatworm Nervous Systems
First appearance of cephalization.
Primitive brain.Eyespots
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Flatworm Reproduction
Sexually - Hermaphrodites – internal fertilzation.
Asexually – fission – when damaged, regenerates new body parts.
Proglottids – found in tapeworms – each is shed off individually.