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Fishery lab 1
questions on worksheet
| Question | Answer |
|---|---|
| what is the common name for the Class of fish that the lamprey belongs? | Agnathans |
| What are some features of this class | jawless, circular mouth, long slender bodies, gill slits/openings |
| What does anadromous mean? | Migrates from salt to fresh water to spawn |
| Describe the outer covering of the lamprey. | Smooth durable skin, |
| What keeps the lamprey upright while it swims | Dorsal fins |
| The ________ are muscles that can be seen through the skin | myomeres |
| Excretory waste passes out of the ___________ | cloacal aperture |
| Describe the symmetry of the lamprey's caudal fin | Protocercal |
| What structure allows lampreys to detect vibrations | lateral line |
| How many external gill slits does a lamprey have | 7 |
| The ______ of a lamprey is used to rasp a hole in its prey. | tongue |
| What structure detects light intensity in the lamprey | pinial organ |
| How might a lamprey travel over a waterfall | attach to another migrating fish |
| what is unusual about the lampreys nostril opening? | it is one single hole that is linked straight to the olfactory |
| How does the lamprey keep its host's blood from clotting? | anticoagulants |
| what are the teeth of a lamprey used for? | used to grind a wound in host |
| What are the buccal papilla and what are they used for? | finger-like projections that help the lamprey attach itself to a host |
| How does a lamprey get water across its gills while attached to its host? | by expanding its gill pouches |
| Describe the main component of the lampreys skeleton. | Notochord it is the rigid part of the skeleton that gives the lamprey its shape and structure |
| What is the function of the gills | Gas exchange, absorb oxygen and release Carbon dioxide |
| What are the most developed part of the lampreys brain | olfactory, octic lobes |
| What organ stores the products of digestion | LIVER |
| Why do lampreys not need a stomach | liquid diet |
| Describe the path of blood through the heart and body of the lamprey | ventricle, gills, body, atrium |
| what structure surrounds the heart | liver |
| what organ maintains water balance and removes nitrogenous waste | Kidney |
| Do lampreys practice internal or external fertilization | external |
| What is the common name for the class of fish that dogfish belong to. | chondrichthyes |
| what are some features of this class | cartilaginous, gill slits |
| Describe the symmetry of the caudal fin and how its shape affects the motion of the shark as it swims | epicercal, propels the fish downward as it swims |
| what is located at the anterior end of both dorsal fins? | spines with poison |
| what detects vibrations and pressure changes for the shark? | lateral line |
| what gives the shark sandpaper feeling texture? | Placoid skin |
| explain how the shark compensates for the downward thrust of the caudal fin? | pectoral fin shape |
| How can you determine the sex of a shark | claspers |
| How is the urogenital papilla of the male different from the female? | female has an opening, the male transfers sperm for internal fertilization |
| What are the tw main functions of the inner ear? | sound reception, balance (equilibrium) |
| what is the function of the spiracles? | transfer water across gills if mouth is closed |
| can a shark see in color? | yes very good vision |
| how does a shark use smell to locate food? | use unequal balance of smell to locate food |
| what happens when a shark loses a tooth | keeps replacing it |
| what organ helps provide buoyancy for a shark | liver, production of bile |
| can a shark see in color? | yes very good vision |
| how does a shark use smell to locate food? | use unequal balance of smell to locate food |
| what happens when a shark loses a tooth | keeps replacing it |
| what organ helps provide buoyancy for a shark | liver, production of bile |
| What is the function of bile and where is it stored? | detox for waste in liver |
| what is rugae and where is it located? | rugae is fold within stomach which allows stomach to expand |
| where are red blood cells produced in the shark | spleen |
| what organ removes salt from the shark's body | recto gland |
| what is the function spiral valve and where is it located | increase surface area of the short intestine in sharks |
| why is it said that the dogfish is ovoviviparous | 20-22 months for young to develop, internally than rears live young |
| what is the common name for the class of fish that the perch belongs to? | actinopterygii |
| what are some features of this class | bony skeleton, most species in class, 2 dorsal fins |
| how are the two dorsal fins different | one has spines other soft rays |
| how can you determine the age of a perch | count rings on scale |
| describe how a bony fish can hover in one location | swim bladder, fin movement, operculum |
| out of what opening do femal perch release their eggs? | genital pore |
| which fins help the perch stay upright while swimming? | dorsal and anal |
| what are two features of the eye that help the perch see in dim underwater environments? | large eyes and large pupils |
| where do the nostril opening lead | to the brain, no water enters them |
| do perch chew their food or swallow it whole | swallow it whole |
| do fish have teeth on the upper jaw, lower jaw or both | both |
| what are the main functions fo the operculum? | gill protection, aid in water movement across the gills |
| distinguish fish that are oviparous and those that are ovoviviparous? | oviparous-female sheds eggs ovoviviparous-internal fertilization |
| what are the pyloric caeca and what is their function? | secrete enzymes, absorb nutrients, located in stomach |
| what are the names and the functions of the three main parts of a gill? | arch of cartilage, gill filaments, rakers |
| what organ regulates the level of glucose in the blood? | liver |
| what are the two parts of the stomach called? | cardiac, pyloric |
| what regulates the passage of food from the stomach to the intestine? | pyloric caeca |
| describe how the perch maintains buoyancy | swim bladder |
| what organ produces white blood cells for the perch | spleen |
| what are the two main functions of the perch's pancreas? | enzymes for digestion and produces insulin |
| how do the kidneys function differently in fresh water and salt water fish? | Fresh-lots of urine Salt-fish continuously drinks water and concentrate urine to some water in body. |
Created by:
hunter32