Destiny introduces Dory to her neighbor, Bailey, a beluga whale who claims to have lost his ability to find objects using sound waves. Bailey believes that his head is swollen, but Destiny states that his head is naturally that big because of his species.
Hank illustrates the differences between plant and animal cells. Both are eukaryotic cells, but they have their own unique characteristics. Hank also explains why humans cannot eat wood and plants in the way that other animals can.
Key Words: Eukaryotic Cells, Prokaryotic Cells, Organelles, Cytoplasm, Cell Wall, Cellulose, Photosynthesis, Plastids, Chloroplasts, Central Vacuole
Hank explains the way in which organisms grow and develop. He covers how to determine the complexity of an organism and illustrates that the digestive tract is the first part of the organism that develops.
Key Words: Animal Phyla, Layers of Tissue, Zygote, Cleaving, Blastula, Radial Symmetry, Bilateral Symmetry, Gastrulation, Gastrula, Deuterostome, Germ Layers, Ectoderm, Endoderm, Diploblastic, Triploblasts, Mesoderm