Transcript Biology I Study Guide Worms

Biology I Study Guide
Worms
Flatworms
Roundworms
Segmented
Worms
Flatworm Study Guide
Flatworms are members of the Phylum Platyhelminthes
Planaria and Tapeworms are members of this phylum
Flatworms are animals
Flatworms have 3 layers of tissues •the ectoderm (outer layer that gives rise to nervous tissue and skin)
•the endoderm (inner layer which gives rise to the gut lining)
•the mesoderm (middle layer which gives rise to muscle,
reproductive organs, and circulatory vessels)
Flatworms have bilateral symmetry
Flatworms exhibit cephalization (they have a distinct head region)
Flatworms have internal organs
Flatworms are acoelomate - they are solid and have no body cavity
Flatworms are protostomes
Flatworm
Quiz
Flatworm Quiz
1. Flatworms have 2 layers of tissues.
True
False
2. Flatworms have a mouth and anus.
True
False
3. Flatworms belong to Phylum Nematoda.
True
False
4. Flat worms have radial symmetry.
True
False
5. Most flatworms are coelomates.
True
False
6. Flatworms belong to the Kingdom Animalia
True
False
7. Flatworms are protostomes.
True
False
8. Flatworms are segmented.
True
False
9. Platyhelminthes have internal organs.
True
False
10. Flatworms are sessile.
True
False
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Roundworm Study Guide
Roundworms are members of the Phylum Nematoda
Roundworms are animals
Roundworms have 3 layers of tissues •The ectoderm (gives rise to nervous tissue and skin)
•The endoderm (gives rise to the gut lining)
•The mesoderm (gives rise to muscle, reproductive organs, and
circulatory vessels)
Roundworms have both a mouth and an anus
Roundworms are pseudocoelomates (the body cavity lies between
the mesoderm and the endoderm)
Roundworms have bilateral symmetry
Roundworms reproduce sexually
Many roundworms are parasitic
Roundworm
Quiz
Roundworm Quiz
1. Roundworms have 2 layers of tissues.
True
False
2. Roundworms have a mouth and anus.
True
False
3. Roundworms belong to Phylum Nematoda.
True
False
4. Roundworms have radial symmetry.
True
False
5. Most roundworms are coelomates.
True
False
6. Roundworms belong to the Kingdom Animalia.
True
False
7. Roundworms are protostomes.
True
False
8. Roundworms are segmented.
True
False
9. Nematoda have internal organs.
True
False
10. Roundworms are sessile.
True
False
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Segmented Worm Study Guide
Segmented worms belong to the Phylum Annelida.
Segmented worms have 3 layers of tissues •the ectoderm (gives rise to nervous tissue and skin)
•the endoderm (gives rise to the gut lining)
•the mesoderm (gives rise to muscle, reproductive organs, and
circulatory vessels)
Earthworms are examples of segmented worms.
Annelida are protostomes.
Annelida have both a mouth and an anus.
Annelida exhibit cephalization.
Annelida are coelomates (have a body cavity that lies within the
mesoderm).
Annelida exhibit bilateral symmetry.
Segmented worms are animals.
Leeches are parasitic annelids.
Most annelids reproduce sexually
Segmented
Worms
Quiz
Segmented Worm Quiz
1. Annelids have 2 layers of tissues.
True
False
2. Earthworms have a mouth and anus.
True
False
3. Earthworms belong to Phylum Nematoda.
True
False
4. Annelids have radial symmetry.
True
False
5. Most annelids are coelomates.
True
False
6. Leeches belong to the Kingdom Animalia
True
False
7. Annelids are protostomes.
True
False
8. Annelids are segmented.
True
False
9. Annelids have internal organs.
True
False
10. Some annelids help aerate and fertilize the soil.
True
False
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