INVERTEBRATES I- PHYLUM: PORIFERA, CNIDARIA, AND WORMS

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INVERTEBRATES I- PHYLUM: PORIFERA, CNIDARIA, AND WORMS -This is a 45 slide power point presentation and 7 pages of students notes that going to help you teach the topic of invertebrates to secondary students. This presentation contains 3 formative assessments, clear explanations and engaging images.
Teaching concepts are: Invertebrates part one, broadcasting the phylums; Porifera, Cnidaria and Worms- main characteristics, habitat, food, type of reproduction and more. Lesson align with the common core standards.

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Invertebrates
These are animals without a backbone
There are three groups of invertebrates in this presentation you going to learn about the phylum : Porifera, cnidarian and Mollusca.


INVERTEBRATES BODY PLANS
Invertebrates have three basic body plans or symmetry: Bilateral, radial and some animals are asymmetrical

Phylum: Porifera
Porifera
Phylum: Porifera
Common name: sponges
Habitat: freshwater and marine
Nutrition: Diet: Sponges are filter feeders. Most sponges eat tiny,
floating organic particles and plankton that they filter from the water
the flows through their body. Food is collected in specialized cells called choanocytes and brought to other cells by amoebocytes.
free-living heterotroph
They cannot move around. They attach themselves
to rocks or the ocean floor.

Phylum: Porifera
Special Structures and or Features: body covered with pores/spicules for support
Reproduction: asexual/sexual hermaphroditic
Economic and/or Biological Importance:
commercial uses in pottery, car washing
Peripheral Symmetry
asymetrical


radial
Phylum: Porifera
If part of a sponge is broken off, the missing part can regenerate or grow back.

Feeding
Filter feeders – microscopic particles stick to collar cells and engulfed by endocytosis
Then passed on to gametocytes where it is digested and moved on to other parts of the cell
Both types of reproduction Asexual and Sexual
Asexually reproduce by budding - part of the sponge simply falls off the parent and grows into a new sponge
Sexually with the formation of gemmules

Ecological Roles
They provide habitat and food for other aquatic animals

B. Food for some

Phylum Porifera
Phylum Porifera
Phylum Porifera
Phylum Porifera
Phylum Porifera
Phylum Cnidarian –
Cnidarian
Phylum CnidarianInvertebrates with Stinging Cells
They live on the ocean floor.
They shoot poisonous darts.
They have a complex tissues a gut for digesting food, and a simple network of nerve cells.

Cnidarians
Have thin sack like bodies
Have tentacles
Two body forms
Kinds of cnidarians
Phylum Cnidarians
Phylum Cnidarian
Phylum Cnidarian
Phylum Cnidarian
Phylum Cnidarian
Phylum Cnidarian
Annelida
Types of worms
Phylum: Annelida
Common name: segmented worms (annelids)
Habitat: freshwater, marine & terrestrial
Nutrition: free-living; some parasitic
Phylum: Annelida
Special Structures and or Features: segmented, repeated body sections
Reproduction: sexual (some hermaphroditic)
Economic and/or Biological Importance: turn over soil (earthworm) used in surgery and amputations (leech)
Phylum Annelida- Importance
Earthworms, of the phylum Annelida are food for birds, and keep the soil aerated.
Leeches are also annelids, and help with healing wounds.
Platyhelminthes
Platyhelminthes or Flatworms.
Common name: flatworms
Habitat: freshwater, terrestrial
Nutrition: parasitic; some free-living
Platyhelminthes
Special Structures and or Features: flat body design; one body opening
Reproduction: asexual/sexual hermaphroditic
Economic or Biological Importance: cause disease
Flatworm Anatomy
Tapeworm
Phylum Platyhelminthes
Phylum Platyhelminthes
Phylum Platyhelminthes
Phylum Platyhelminthes
Nematoda- Roundworms
Phylum: Nematoda
Common name: roundworms
Habitat: freshwater, marine & terrestrial
Nutrition: both parasitic and free-living
has two nerve cords that transmit impulses in the roundworm.
has no heart or formal blood vessels.
has no formal respiratory system

Phylum: nematoda-Roundworms
Special Structures: Round body and true body cavity
Reproduction: sexual
Bilateral Symmetry
Economic and/or Biological Importance:
used in genetic studies; cause disease
Phylum Nematoda
Phylum Nematode

You will see a set of pictures of different invertebrates write-down the number and the phylum of each corresponding organism. You will have 30 seconds to answer
If you don’t know leave the space in blank
1. Tapeworm
2. Leech
3. Sea Nettle Jellyfish
4. Sponge
5. Sea Coral
6. Liver Fluke
7. Giant Earthworm
8. Ascaris
9. Millipede
10 . Planarian
Learning check No 3
Fill out the information in the chart provided. Use your students’ notes and book information. Complete this chart after this presentation with your partners.


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Total Pages
45
Answer Key
N/A
Teaching Duration
55 Minutes

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INVERTEBRATES I- PHYLUM: PORIFERA, CNIDARIA, AND WORMS
INVERTEBRATES I- PHYLUM: PORIFERA, CNIDARIA, AND WORMS
INVERTEBRATES I- PHYLUM: PORIFERA, CNIDARIA, AND WORMS
INVERTEBRATES I- PHYLUM: PORIFERA, CNIDARIA, AND WORMS