What are the electrical sensing cells in rays and sharks?
Ampullae de Lorenzini
100
How do starfish escape from predators?
The arms detach/ break off
200
What organ is responsible for vocalization for dolphins and whales?
Melon
200
Why are polar bears considered vulnerable in terms of habitat and population numbers?
Have a stable population number but have future risk of habitat loss.
200
What protein gives Tuna Fish flesh a red color?
Myoglobin
200
Describe how electric eels generate electricity?
Muscle contractions
200
What class do starfish belong to?
Asteroidea
300
What are the three hunting strategies Polar Bears use to hunt Seals
Still Hunting, Stalk and Rush, and Den Raiding
300
How would you best describe mammal reproduction in terms of number of offspring and how long they take care of their young
Reproduce in low numbers and spend a long time raising young.
300
What is the term to describe the microorganisms that are poisonous that live in Barracuda's mouth?
Ciguatoxic
300
What are three physical characteristics that pertain to a ray?
Enlarged pectoral fins, Gills on the ventral side of the body, small dorsal fin, flat circular body
300
Describe how starfish reproduce in terms of reproduction numbers and how much time they spend raising their young?
Reproduce in very large numbers, but spend no time raising their young.
400
What would be some evidence that humans and whales are related?
Having the same bones in the human hand and whale flipper
400
How would the ecosystem be affected if manatees were removed from it?
Sea Grass would grow in large numbers
400
Describe how Billfish use their bill to hunt for fish?
Move bill side to side to stun fish in bait balls
400
Describe the shape of a stingray barb? What are the two reasons why stingray barbs are so dangerous?
1. Arrowhead shaped
2. When trying to remove the barb, you cut up more of your flesh. The barb is fragile and will fragment inside your body leading to infection.
400
Describe how starfish generate movement?
They take in water through the madreporite and use muscle contractions to push the water out to the tube feet.
500
Describe how dolphin communication is different from whale communication?
Dolphins use high frequency clicks and squeals
Whales use low frequency singing sounds
500
What organism population would increase if Sea Otters were removed from the ecosystem?
Sea Urchins
500
What are the two reasons why Tuna fish can't swim at top speed for long periods of time?
1. They can cook their own flesh
2. They will cause damage to their tail fin
500
Describe the type of voltage used to generate electrolocation to locate prey? How do the electric eels know where their prey are?
They use low voltage around 5 volt impulses. When a fish moves it creates a distortion in the electric field generated by muscle movement, which the electric eel senses.
500
What are the two ways starfish perform asexual reproduction?
Describe how each of these two methods of asexual reproduction work?
Fission- the organism is split in half and each half regenerates into a new organism.
Autonomy- When one arm is separated from the organism and that one arm regenerates into a new organism.