Annelids: I learned that the Annelid phylum can be made up of many creatures such as earthworms, leeches, and worms that can adapt to a variety of environments. The body of annelids is divided into segments that appear to the naked eye as rings. They have muscles that help them move by contracting longitudinal and circular muscles. When annelids eat food, the food particles travel through one end of the body and are expelled out the other end. The video improved my understanding of Annelids because without seeing the different species and what classified them as Annelids I would never have known that an earthworm or leech fell into that phylum. Test Questions: 1) What muscles do Annelids use to move?a. Longitudinal and circular musclesb. Pectorals and obliques. Latitudinal and longitudinal muscles. None of the above Answer: A, Longitudinal and circular muscles2) Which of the following is an evolutionary improvement in annelids. Celombo. Segmentationc. Deuterstome developed. Development of the protostome Answer: B, SegmentationMolluscs: In the phylum Molluscs, there are many organisms that have body parts that change as the surrounding environment changes; like octopus. An octopus can camouflage itself with a variety of objects in its environment. Each organism in the Mollusc phylum has a type of foot that provides mobility and feeds via a radula. The radula is a strap-like tongue that has very sharp teeth and can change different shapes or sizes based on prey. They have a pseudo coelomate body plan, meaning they have a coelom that exists, but is lined by mesoderm only on the body wall, not around the gut. This video has improved my understanding of the phylum Mollu...... center of paper...... tense muscles. The quadrupling of genes led to the birth of larger animals such as elephants. The largest member of the chordate phylum to ever walk the Earth were the dinosaurs. The animal closest to man are the great apes. Great apes can think, feel, nurture their own, pass on social skills, imitate and remember just like humans do. Human intelligence is greater than anything on Earth! This video improved my understanding of chordates because it explained how some chordates do or do not have vertebrae and showed how land animals evolved from fish. I always enjoy seeing different videos on how species, especially humans, originated. Test questions:1) What structure is present in a chordate?a. Notochordab. Spinal cord. BrainAnswer: A, notochord.2) Which of the following are not found in the chordate phylum?a. Lizardb. Apesc. Birds. ScorpionsAnswer: D, Scorpions