BIO 151 FULL QUESTIONS AND CORRECT
ANSWERS VERIFIED STUDY PACK
●● What type of digestion do animals use?
Answer: Internal digestion
●● What is a blastula?
Answer: Hollow ball of cells formed in early development.
●● What are Parazoans?
Answer: Animals without true tissues (sponges)
●● What are Eumetazoans?
Answer: Animals with true tissues
●● What is radial symmetry?
Answer: Many planes of symmetry around an axis
●● What is bilateral symmetry?
Answer: One plane divides body into left/right halves
●● What is an advantage of bilateral symmetry?
,Answer: Cephalization and directional movement
●● Do sponges have symmetry?
Answer: no symmetry
●● How do sponges digest food?
Answer: Intracellular digestion
●● What are choanocytes?
Answer: Flagellated cells that capture food and move water
●● How do sponges exchange gases?
Answer: Diffusion
●● What symmetry do cnidarians have?
Answer: Radial symmetry
●● What structure surrounds the mouth on Cnidarians?
Answer: Tentacles with stinging cells
●● What is the gastrovascular cavity?
Answer: Site of digestion and waste removal
,●● Type of digestion in cnidarians?
Answer: Extracellular
●● What are protostomes?
Answer: Mouth forms first
●● What are deuterostomes?
Answer: Anus forms first
●● What are annelids?
Answer: segmented worms
●● Type of circulatory system in annelids?
Answer: closed
●● What is a hydrostatic skeleton?
Answer: Support via fluid pressure
●● What is the mantle in mollusks?
Answer: Structure for respiration, excretion, shell formation
, ●● What is ecdysis?
Answer: Molting of cuticle
●● What covers ecdysozoans?
Answer: Cuticle
●● Body shape of nematodes?
Answer: Cylindrical
●● Many nematodes are what type of organisms?
Answer: Parasitic
●● Key feature of arthropods?
Answer: Jointed appendages
●● What is chitin?
Answer: Tough polysaccharide exoskeleton
●● Why is the exoskeleton important?
Answer: Protection and support
●● What do chelicerates lack that most arthropods have?
ANSWERS VERIFIED STUDY PACK
●● What type of digestion do animals use?
Answer: Internal digestion
●● What is a blastula?
Answer: Hollow ball of cells formed in early development.
●● What are Parazoans?
Answer: Animals without true tissues (sponges)
●● What are Eumetazoans?
Answer: Animals with true tissues
●● What is radial symmetry?
Answer: Many planes of symmetry around an axis
●● What is bilateral symmetry?
Answer: One plane divides body into left/right halves
●● What is an advantage of bilateral symmetry?
,Answer: Cephalization and directional movement
●● Do sponges have symmetry?
Answer: no symmetry
●● How do sponges digest food?
Answer: Intracellular digestion
●● What are choanocytes?
Answer: Flagellated cells that capture food and move water
●● How do sponges exchange gases?
Answer: Diffusion
●● What symmetry do cnidarians have?
Answer: Radial symmetry
●● What structure surrounds the mouth on Cnidarians?
Answer: Tentacles with stinging cells
●● What is the gastrovascular cavity?
Answer: Site of digestion and waste removal
,●● Type of digestion in cnidarians?
Answer: Extracellular
●● What are protostomes?
Answer: Mouth forms first
●● What are deuterostomes?
Answer: Anus forms first
●● What are annelids?
Answer: segmented worms
●● Type of circulatory system in annelids?
Answer: closed
●● What is a hydrostatic skeleton?
Answer: Support via fluid pressure
●● What is the mantle in mollusks?
Answer: Structure for respiration, excretion, shell formation
, ●● What is ecdysis?
Answer: Molting of cuticle
●● What covers ecdysozoans?
Answer: Cuticle
●● Body shape of nematodes?
Answer: Cylindrical
●● Many nematodes are what type of organisms?
Answer: Parasitic
●● Key feature of arthropods?
Answer: Jointed appendages
●● What is chitin?
Answer: Tough polysaccharide exoskeleton
●● Why is the exoskeleton important?
Answer: Protection and support
●● What do chelicerates lack that most arthropods have?
