Chordates
What is a NOTOCHORD?
A flexible skeletal rod that protects the hollow nerve chord
What is a fish scientists called?
An ICHTHYOLOGIST.
What is the name (Latin please) of the class to which jawless fish belong?
AGNATHA
What is the name of the CLASS (Latin) to which cartilaginous fish belong?
CHONDRICHTHYES
To which CLASS to Bony Fish belong (Latin name)?
Osteichthyes
What is the difference between a VERTEBRAE and a VERTEBRATE?
VERTEBRAE are the bones that make up your spine. A VERTEBRATE is an animal with a backbone.
Approximately how many species of fish are there in the world?
About 32,000.
What are two examples of JAWLESS FISH?
HAGFISH and LAMPREY.
Why do (some) sharks need to keep swimming (two reasons)?
1. So that they don't sink (sharks are more dense than water)
2. So they can pass oxygen-rich water over their gills.
An organ inside a bony fish that can either inflate or deflate, which will aid in buoyancy control of the fish.
To which phylum do all fish belong?
CHORDATA
Which organ can detect pressure differences and small vibrations in the water?
The LATERAL LINE ORGAN.
What are two adaptations of the hagfish that help it to survive?
1. They create a defensive slime.
2. Their teeth are shaped such that they can latch onto their prey and gather nutrients.
What are three characteristics of all cartilaginous fish?
1. Their endoskeletons are made up of cartilage.
2. They are carnivores.
3. They have jaws.
How does the mucous, which covers a fish's body help it to survive better in its environment?
1. Protection.
2. It can decrease drag, which will increase its speed in the water.
A TUNICATE (Sea Squirt) and a LANCELET.
Define ECTOTHERMIC.
An animal whose internal body temperature is the same as its environment.
Describe a Lamprey or Hagfish's mouth.
Describe ELECTRO-PERCEPTION.
The ampullae of Lorenzini are tiny gel-filled pits in the shark's snout that receive and interpret weak electrical signals coming from the muscle movements of a prey.
What are three characteristics of all BONY FISH?
1. They have an endoskeleton made of bone.
2. They have jaws.
3. They have scales.
What are three characteristics of all CHORDATES?
1. Have or had gills/gill slits at some point in its development.
2. Have or had the presence of a NOTOCHORD.
3. Have an endoskeleton.
What does it mean that a fish has a STREAMLINED BODY?
The fish is shaped such that it can cut through the water, reducing drag, and is able to travel faster.
What are three characteristics of all JAWLESS FISH?
1. They are ancient and have not evolved much.
2. They are parasites.
3. They have no jaw.
Please list 8 kinds of sharks.
Hammerhead, lemon, basking, white-tipped reef shark, great white, goblin, cookie cutter, tiger, bull, mako, etc.
Please list 10 species of BONY FISH.
Examples include: tuna, pike, salmon, sailfish, goldfish, perch, sunfish, sunfish, pufferfish, seahorses, etc.