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Marine Biology ch.9
| Question | Answer |
|---|---|
| Ectoparasite | A parasite that attaches to the outer covering of its host. |
| Exoskeleton | A hard protective exterior skeleton such as that found in anthropods. |
| Mother of pearl layer | Another term for the nacreous layer of pearl oysters. |
| Nudibrach | A gastropod moll use that does not have a shell and has many projections from its body called cerata. |
| Whorls | The turns of a gastropod's spiral shell. |
| Abdomen | A body region of an animal they corresponds to the belly. I arthropods this region is usually muscular and contains gills. |
| Caraspace | The hard dorsal covering of some animals bodies, such as arthropods or turtles. |
| Chromatophore | A special cell in an animals skin that contains pigment molecules. |
| Shipworm | A mollusc with a worm like body belonging to the genus teredo or Bankia that can burrow into wood. |
| Head-Foot | The region of the gastropod body that contains the head with its mouth and sensory organs and the foot which is the animals organ of locomotion. |
| Gastropods | A member of the molluscan class gastropoda which includes snails, limpets, abolanes, and nudibranch. |
| Tentacle | A armlike or fingerlike structure that projects from an animals body, usually the head. |
| Molting | In arthropods, the process in which an old exoskeleton is shed and a new one is formed. |
| Sepia | A dark fluid produced into the ink glans of cephalopods. |
| Roe | A ovary with eggs. |
| Aristotle's lantern | A chewing structure composed of five teeth found in the mouths of sea urchins. |
| Grasping spine | A structure on the head of an arrow worm use to capture prey. |
| Salp | A free-swimming tunicate belonging to the class thaliacea. |
| Melanin | A brown or brown-black pigment found in many animals. |
| Euiscerate | The release of internal organs from the mouth or anus. This behavior by sea cucumber to deter prey. |
| Gnathopods | Specialized appendages found on amphipods that are used for collecting food. |
| Oviduct | A tube that carries eggs to the outside of a females body. |
| Decopod | An animal with five pairs of walking legs that belongs to the arthropod order decapoda, which includes crabs, lobsters, and shrimps. |
| Zooid | An individual member of a bryozoan colony. |
| Pen | An internal strip of hard protein that helps support the mantle of a squid. |
| The molluscan shell is secreted by the | Mantle |
| The____is a unique toothlike structure found in many mollusc | Radula |
| Molluscs that have shells composed of eight plates held together by a fleshy girdle are | Chitons |
| A type of bivalve that can damage wood is the | Shipworm |
| Molluscs that have tentacles and a highly developed nervous system are | Cephalopods |
| Arthropod characterics include | Jointed Appendages |
| During molting, arthropods | Shed their old exoskeleton |
| While on a field trip to the seashore, you discover an animal with a spiny skin and a water vascular system. This animal is probably an | echinoderm |
| Animals known as brachiopods | Produce a shell composed of two valve |
| Which of the following adult animals is likely to be a member of the zooplankton? | Larvacean |
| What adaptions allow squids to be successful predators? | They are able to spray ink at their prey and they are able to grab them with their tentacles and tear hard with their beak. |
| What is a lopophore and how does it function in feeding? | Arrangement of tentacles around a mouth and helps with feeding and gas exchange. |
| Name four commercially important crustaceans. | Decapods, mantis shrimp, krill, copepods, ampipods, and barnacles. |
| Explain how the radula is modified in gastropods for different types of feeding? | Used for feeding and cutting through flesh which is later moved all the way to the stomach and is used to scrape, pierce, tearing, and cutting algae or flesh. |
| Describe how a sea star uses its water vascular system to move? | Enters through the medreporite and then pases through canals that are attached to a tube feet. |
| How do sea squirts feed? | Filter feed and remove plankton from the water passing through their pharynx. |
| How do slow moving animals avoid predation? | They have sticky mucus on their tentacles and their prey will get stuck. After they use tentacles to remove them and capture more. |
| Why are arthropods such a successful group of animals? | Have a hard exterior, jointed appendages, and sophisticated sense organs. |
| How are Chelicerates and mandibles different? | Mandibutes have appendages that are used for feeding while chelicerates have six appendages. One is used for feeding. |
| Why do bivalves that burrow in soft sediments need siphons? | Siphons are used to completely bury themselves in the dirt or mud. |
| How are regular and irregular echinoids adapted to their environment? | Irregular echinoids are adapted to burrowing in ground while regular echinoids are adapted to moving around with their tentacles. |
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baileythegr8
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