Echinoderms
Quiz yourself by thinking what should be in
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on it to display the answer.
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| What kind of endoskeleton does an echinoderm have? | show 🗑
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| What covers the endoskeleton? | show 🗑
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| show | long tapered arms covered with rounded spines
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| What is the endoskeleton of echinoderms made up of? | show 🗑
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| show | pedicellariae
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| What are the pedicellariae used for? | show 🗑
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| show | radial
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| show | use their senses in all directions
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| show | water vascular
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| How does the water vascular system work? | show 🗑
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| show | A disk-shaped opening, like a sieve, through which water enters and exits an echinoderm.
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| What does the madreporite keep from getting in the echinoderm? | show 🗑
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| show | 1. move
2. take in oxygen
3. capture food
4. release waste
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| What are the appendages of echinoderms covered in? | show 🗑
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| What are tube feet like? | show 🗑
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| What are located at the base of the tube feet? | show 🗑
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| show | the bulb of a dropper
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| What do the ampulla work? | show 🗑
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| show | yes
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| show | 1. movement along the ocean bottom
2. gas exchange
3. waste removal (diffusion)
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| What are the 4 things that make up an echinoderm's digestive system? | show 🗑
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| show | meat, such as, shrimp, small fish, clams, mollusks, and sea worms
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| show | plants, such as seaweed and kelp
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| What do scavengers eat? | show 🗑
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| show | nerve ring around their mouth
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| show | nerves branching to each ray form nerve nets, and relay sensory information to the ring
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| show | eye spots
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| What type of symmetry do the larvae of echinoderms have? | show 🗑
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| What process do the larvae use to become adults? | show 🗑
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| Are echinoderms deuterostomes or protostomes? | show 🗑
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| Where doesn't the mouth of the echinoderm form? | show 🗑
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| show | calcium carbonate plates found under the epidermis; they can be loosely touching (flexibility) or they can slide tight into place (rigidity)
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| What controls water flow from the water vascular system? | show 🗑
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| What are like suction cups, and are used for movement or opening prey? | show 🗑
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| show | eyespots
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| show | digestive gland
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| show | stomach
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| show | anus
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| show | 5 rays, although some have more than 40
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| How does regeneration work in brittle stars? | show 🗑
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| show | they are used for propulsion, as the brittle star doesn't walk on the ocean bottom
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| How are sea urchins or sand dollars shaped? | show 🗑
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| Where are sand dollars' modified tube feet and gills located? | show 🗑
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| How do sea cucumbers distract predators? | show 🗑
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| show | yes
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| How does external fertilization in sea cucumbers work? | show 🗑
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| show | plants
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| show | during the larva stage
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| show | to swim
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| When and where were two types of sea daisies found? | show 🗑
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| How are sea daisies shaped? | show 🗑
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| How big are sea daisies? | show 🗑
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| Where are a sea daisies' tube feet found? | show 🗑
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| show | blood isn't contained in vessels; it flows loose inside the body cavity and tissue spaces
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| show | offspring hatch as larva and must change into their adult form
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| Define: radial symmetry | show 🗑
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| Define: endoskeleton | show 🗑
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| Define: bile | show 🗑
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| Define: coelom | show 🗑
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| show | radial symmetry; has an endoskeleton, water vascular system, and tube feet; example: sea star, urchin, or cucumber
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| Define: ossicle | show 🗑
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| Define: tube feet | show 🗑
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| Define: pedicellariae | show 🗑
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| Define: dorsal | show 🗑
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| show | have a notochord, a hollow dorsal nerve chord, pharyngeal slits, and a postanal tail
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| Define: eyespot | show 🗑
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| Define: rays | show 🗑
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| show | external protective shell
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| show | mass of nerve cells
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| show | opening through which water enters the water vascular system
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| show | controls water entering and leaving tube feet; bulb-like sac
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| Define: stone canal | show 🗑
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| Define: ventral | show 🗑
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| show | encircles mouth of sea star
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| Define: water vascular system | show 🗑
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| Define: ambulacral groove | show 🗑
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| show | part of water vascular system; runs along ambulacral ridge
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| show | runs inside the ambulacral ridge in each arm of a starfish
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| show | egg and sperm unite outside the female's body
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| Define: deuterostome | show 🗑
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| show | organism lives in the ocean
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| show | hollow tubes that project from surface in which gas exchange and nitrogen excretion takes place
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| show | without a backbone
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| show | connected to the digestive gland
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| Define: bipinnaria | show 🗑
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| show | fluid circulated through an open circulatory system
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| show | extruded through the mouth during feeding
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| show | hemolymph-filled space or body cavity
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| Define: pentaradial | show 🗑
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| show | offspring start as small version of adults
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| show | blood is contained in vessels
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| show | no
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| Do invertebrate chordates have a dorsal hollow nerve chord? | show 🗑
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| Do invertebrate chordates have a notochord? | show 🗑
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| Do invertebrate chordates have pharyngeal pouches? | show 🗑
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| show | between the digestive system and the nerve chord
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| show | fluid wrapped in rigid tissue
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| show | back bone
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| What does the notochord form from? | show 🗑
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| show | muscle attachment and movement
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| show | cells that surround a fluid-filled canal
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| show | above the notochord
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| show | the brain and spinal cord
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| show | pharyngeal pouches
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| What does the pharyngeal pouches become in aquatic chordates? | show 🗑
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| What does the pharyngeal pouches become in terrestrial chordates? | show 🗑
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| What is the tail moved by? | show 🗑
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| show | genes that hold directions on how to make specific body tissues and organs
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| What are tunicates? | show 🗑
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| show | yes
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| Rather than eat, what do tunicate larvae do when the hatch? | show 🗑
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| How do tunicates protect themselves? | show 🗑
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| show | respiration
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| When tunicates are bothered, what do they do? | show 🗑
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| How do lancelots spend most of their lives? | show 🗑
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| How many layers of skin do lancelots have? | show 🗑
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| What is an excurrent siphon? | show 🗑
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| What is the pharynx? | show 🗑
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| show | move water through the tunicate
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| What does the heart do? | show 🗑
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| show | food gets trapped there and mixed with mucous; then the food and mucous are moved to the intestines
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| show | the top hole where the water enters; the mouth
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| show | deuterostomes
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| Echinoderms are the only ______ | show 🗑
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| show | madreporite
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| Hollow skin extensions through which gas exchange and excretion takes place are called _____ | show 🗑
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| show | radial
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| show | cardiac
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| show | aboral
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| The surface on a starfish where the anus is located is the ______ surface. | show 🗑
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| The surface on a starfish where the ambulacral ridge is located is the ______ surface. | show 🗑
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| The ability to regrow lost body parts is called ______. | show 🗑
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| Organisms is which the embryonic blastopore becomes the mouth are called ______. | show 🗑
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| show | water vascular system
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| Small pincer-like structures on the skin at the base of the spines which keep the starfish's surface clean are called ______. | show 🗑
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| Small calcium carbonate plates that make up the endoskeleton of an echinoderm are called ______. | show 🗑
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| Type of symmetry seen in starfish larvae | show 🗑
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| In a starfish, the ______ stomach is connected to the digestive glands and stays in the body during feeding. | show 🗑
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| show | oral
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| show | oral
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| show | oral
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| show | radial nerve and radial canal
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| Starfish have ______ development. | show 🗑
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| Name the part of the nervous system that encircles a starfish's mouth. | show 🗑
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| show | open
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| Name the structures at the tips of each arm that sense dark and light. | show 🗑
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| show | animalia
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| show | gas exchange; nitrogen excretion
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| A bulb-like sac that squeezes to control the amount of water in the tube feet is called ______. | show 🗑
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| show | water vascular
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| show | water vascular
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| Name a body part that functions in gas exchange in a starfish. | show 🗑
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| show | control water going to tube feet
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| show | ring canal
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| The name Echinodermata comes from the Latin words meaning ______. | show 🗑
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| Name the surface structures that give echinoderms their name and provide protection. | show 🗑
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| The kind of skeleton found in echinoderms | show 🗑
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| The stomach is part of the ______ system. | show 🗑
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| The nerve ring is part of the ______ system. | show 🗑
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| show | digestive gland
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| Which echinoderms are sessile? | show 🗑
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| Which organism expels its internal organs to scare off predators? | show 🗑
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| What traps food in mucous in sea squirts? | show 🗑
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| show | tunic
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| What moves the tail of invertebrate chordates? | show 🗑
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| What are the genes that hold the directions to create specific body parts? | show 🗑
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| What do pharyngeal pouches become in vertebrate chordates? | show 🗑
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| What becomes gill slits in lancelets and sea squirts? | show 🗑
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| Since the mouth of vertebrates is not made from the opening in the gastrula, they are called ______. | show 🗑
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| How do echinoderms find their prey? | show 🗑
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| show | eyespots
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| show | carnivores, herbivores, and scavengers
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| What serves as muscle attachments in invertebrate chordates? | show 🗑
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| What controls water flow to the tube feet? | show 🗑
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| show | no brain; a nerve ring surrounds the mouth and nerve nets branch out into the rays
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| The notochord forms after the gastrula from what? | show 🗑
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| What moves water into the body of an echinoderm? | show 🗑
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| The endoskeleton of echinoderms is made from what? | show 🗑
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| A structure that functions as a backbone in invertebrate chordates is what? | show 🗑
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| What has a notochord and pharyngeal pouches? | show 🗑
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| show | sea star
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| show | Echinodermata
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| Teeth-like structures found in the mouths of sea urchins that are used for rasping algae are called what? | show 🗑
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| The tunic of sea squirts is composed of which material? | show 🗑
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| A sea squirt uses its ______ for food collection and gas exchange. | show 🗑
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