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BIO104 exam 2
Biology 104 Exam 2
| Question | Answer |
|---|---|
| The Sea Star is in which phylum? | Echinodermata |
| The calcium carbonate plates known as ossicles make up the | Endoskeleton |
| What projects from the ossicles? | spines |
| The Sea Star has a series of water filled canals known as the | Water-Vascular System |
| The Nerve Ring and radial nerves down each arm of the sea star make up the | Nervous System |
| The locomotion of the sea star is dependent on the movement of | the arms and tube feet |
| The respiration of the sea star consist of | diffusion across the tube feet and dermal branchie |
| System used in locomotion, attachment, food gathering and diffusion of gases | Water Vascular System |
| The opening into the sea star's system | Madreporite |
| muscular sac on the tube feet | Ampulla |
| muscular tube attached to the Ampulla | tube foot |
| Where are Sea Stars found | Shore line and coral reefs |
| How many arms does the sea star have radiating out from the central disc? | 5 amrs |
| Which direction is the oral side | Oral side is down |
| Are sea stars dull boring colors or brightly colored? | Brightly Colored |
| The soft thin folds of the body wall between the ossicles are known as the | Dermal branchia |
| The pincer like structures found at the base of the spine and used to protect and clean the sea star is known as the | Pedicellariae |
| Grooves that radiate out on the underside of each arm and contains the radial canal in the middle and two rows of tube feet on each side | Ambulacral grooves |
| Most Sea Stars are | Carnivorous |
| What part of the nervous system does the sea star have at the tip of each arm | Eyespots |
| Can the sea star regenerate? | Yes |
| What type of reproduction does the sea star have? | Sexual: they are dioecious Asexual: by cleaving the central disk |
| Basket stars and Brittle stars can be found | on the hard sea bottoms where no light penatrates |
| These animals have 5 long slender arms sharply set off from the central disk | Basket & Brittle Stars |
| Where do you find sea urchins | Rocky bottoms of all oceans |
| Where do you find sand dollars | sandy bottoms of all oceans |
| What do Basket Stars and Brittle Stars eat? | algae, coral and other organic matter |
| What sea animal is greatly elongated on oral-aboral axis? | Sea Cucumbers |
| Where do you find sea cucumbers? | crawling on the bottom of any ocean and burrowing under rocks |
| The tentacles around the mouth of the sea cucumber are used to | trap food |
| What sea animals are considered the most primative? | Sea Lilies and Feather Stars |
| Which Crinoidea attaches to a substrate by a stalk with it's oral side up | Sea Lilies |
| Which Crinoidea have no stalk and are swimming and crawling animals | Feather Stars |
| where are Sea Lilies and Feather Stars found? | in deep water |
| The Phylum chordata has a skeletal rod at some state in the life cycle that extends the length of the body and bends without shortening which allows flexibility; this rod is known as the | Notochord |
| What is dorsal to the notochord and has a hollow center that fills in during growth? | Dorsal Tubular Nerve Cord |
| The perforated slit-like opening from the digestive tract in the pharyngeal cavity to the outside is called: | Pharyngeal Gill Slits |
| What do the Pharyngeal Gill Slits form in Aquatic Vertebrates? | slits |
| What do the Pharyngeal Gill Slits form in Higher Vertebrates? | Pouches |
| Posterior to the anus in the Chordata there is a tail. This is known as the | Post-Anal Tail |
| Where are Sea Squirts found? | in all seas from shallow to deep water |
| What do sea squirts look like? | they are covered with a thick tunic. |
| Do the sea squirt have all four of the chordate characteristics? | yes in the larvae stage adults only have gill slits |
| Where would you find the marine lancelet? | on sandy bottoms of all coastal waters |
| What does the marine lancelet look like? | They are slender, translucent and tadpole like. |
| The integument of the subphylum vertebrata is modified with... | scales, glands, hair, feathers, horns and claws |
| In the Vertebrata what is replaced with bony or cartilaginous vertebrae? | notochord |
| The many muscles found in the Vertebrata are used for? | movement |
| How many chambers does the heart of a vertebrata have? | 2-4 |
| The vertebrata has a well-developed coelom filled with | visceral systems |
| The excretory system of the vertebrata consists of | paired kidneys |
| The endocrine system produces | hormones |
| What is the body plan of the vertebrata | head, trunk and post anal tail |
Created by:
Glasscock BIO104
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