Biology 113 Exam Questions and answers with complete solutions Latest Updated 2025 |
Verified
What are the four traits that characterize an animal? - Multicellular body, Heterotrophic
nutrition, Aerobic Respiration, and Contractile fiber
What are the three types of body symmetry? - No symmetry, Radial symmetry, and
Bilateral symmetry
What is the difference between a sac body plan and a tube-within-a-tube body plan? -
Sac Body Plan is a single opening (mouth) into the gastrovascular cavity. Tub-within-a-
tub Body Plan is a tubelike digestive tract with a mouth at one end and an anus at other
What is a coelom and what type of animals have them? - The coelom is a fluid-filled
space between the digestive tract and body wall found in tube-within-a-tube animals.
Flatworms and Roundworms have them
What is a blastopore? - The first opening formed in an early embryo
Know the different phyla of the animal groups from this lab: Sponges, Jellyfish,
Flatworms, and Nematodes. - Sponges: Porifera Jellyfish: Cnidaria, Flatworms:
Platyhelminthes, Nematodes: Nematoda
In sponges, what is a spicule? What is a choanocyte? - Spicules: Calcium
carbonate/silica microscopic structures. Choanocytes: Collar cells that maintain the flow
of water and food particles through the body
What is the name of the cells that jellyfish use to sting? - Cnidocytes/nematocysts
What are the two life cycle stages of jellyfish? - Medusa and polyps
Name an example of a parasitic flatworm. - Genus Taenia (Tapeworm)
What type of body plan do nematodes have? - Tube-within-a-tube body plan
Know the phyla for each of these groups of animals. - Mollusks: Mollusca, Annelids:
Annelids, Arthropods: Anthropoda
What is the name of the organ that molluscs secrete their shells from? - Mantle
Do cephalopods have feet? How do they move? - No, they use jet propulsion to move
What is the name of the body segments in annelids? - Somites
Verified
What are the four traits that characterize an animal? - Multicellular body, Heterotrophic
nutrition, Aerobic Respiration, and Contractile fiber
What are the three types of body symmetry? - No symmetry, Radial symmetry, and
Bilateral symmetry
What is the difference between a sac body plan and a tube-within-a-tube body plan? -
Sac Body Plan is a single opening (mouth) into the gastrovascular cavity. Tub-within-a-
tub Body Plan is a tubelike digestive tract with a mouth at one end and an anus at other
What is a coelom and what type of animals have them? - The coelom is a fluid-filled
space between the digestive tract and body wall found in tube-within-a-tube animals.
Flatworms and Roundworms have them
What is a blastopore? - The first opening formed in an early embryo
Know the different phyla of the animal groups from this lab: Sponges, Jellyfish,
Flatworms, and Nematodes. - Sponges: Porifera Jellyfish: Cnidaria, Flatworms:
Platyhelminthes, Nematodes: Nematoda
In sponges, what is a spicule? What is a choanocyte? - Spicules: Calcium
carbonate/silica microscopic structures. Choanocytes: Collar cells that maintain the flow
of water and food particles through the body
What is the name of the cells that jellyfish use to sting? - Cnidocytes/nematocysts
What are the two life cycle stages of jellyfish? - Medusa and polyps
Name an example of a parasitic flatworm. - Genus Taenia (Tapeworm)
What type of body plan do nematodes have? - Tube-within-a-tube body plan
Know the phyla for each of these groups of animals. - Mollusks: Mollusca, Annelids:
Annelids, Arthropods: Anthropoda
What is the name of the organ that molluscs secrete their shells from? - Mantle
Do cephalopods have feet? How do they move? - No, they use jet propulsion to move
What is the name of the body segments in annelids? - Somites
