World Builders -- Session Six

Aquatic Zoology

     On earth, some of the unicellular animals evolved into multicellular forms. Some became communities of very similar cells, but animal cells, too, began to differentiate from one another as they became members of a single organism. As animals cannot make their own food, multicellular animals, even primitive ones, had to find ways to capture nourishing chemicals. In the sea, some of the animals were mobile, and discovered the advantages of moving quickly or hiding well. Others, like those in the illustration, stayed in one place, like plants, and strained digestible material from the water flowing by.

• Introduction to Session Six
• Helpful Web Sites
• Science Notes
  • Design Your Water Animal for Evolution
  • Introduction to Biomes
  • How Animals Travel
  • Fishes
  • Animals and Plants in the Water
• Check Chapter 6 on the WorkSheet Master Page to Get Ideas About Making Your Animals Evolve
• What You Should Know: Study Questions for Test Preparation
• Go on to Lesson 7
• Return to Lesson Index Page.

• discuss how your animals came into being, how they move, and what they eat .
• sketch the developmental phases of your aquatic animals
• draw a diagram to show how the animals are related to each other
• write descriptions of the animals, telling how they eat, move, reproduce
• each person will design his or her own aquatic animal.

Homework: Bring to class next session:

• written descriptions (on a web page) of how your animals evolved.
• written descriptions (on a web page) of the individual kinds of animals.
• computer drawn or scanned drawings of your creatures evolving in stages
• can you diagram the internal structure of your creatures?
• a computer drawn diagram of how the animals are related