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61 terms

fish and amphibians test (tuesday)

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an animal whose body temperature changes with the temperature of its environment
ectotherm
an animal whose body temperature is maintained at a steady temperature
endotherm
an internal gas-filled sac that helps fish to swim at different depths
swim bladder
the force water exerts upward on any underwater object
buoyant force
highly developed nervous system, ectotherms, external fertilization, closed circulatory system, fins, scales, gills, and make up about 50% of all vertebrates
What are 8 characteristics that almost all fish share?
oxygen
What moves from the water to the blood as water flows over the gills in a fish?
carbon dioxide
What moves from blood to water in a fish?
eating (hunting and feeding)
What is most movement related to in fish?
nervous system and sense organs
What 2 things are highly developed in a fish?
jawless fish, cartilaginous fish, and bony fish
What are the 3 different types of fish?
mouth structure and type of skeleton
What 2 things does fish classification depend on?
no scales, gills, ectotherms, closed circulatory system, highly developed nervous system, no paired fins, skeleton is made of cartilage, live in only salt water, no jaws, and are either scavengers or parasites
What are 10 characteristics that all jawless fish share?
skeleton is made of cartilage, ectotherms, highly developed nervous system, gills, closed circulatory system, have jaws, pointed scales, fins, live in only salt water, and carnivores
What are 10 characteristics that all cartilaginous fish share?
skeleton of hard bone, ectotherms, closed circulatory system, highly developed nervous system, fins, scales, gills, swim bladder, represent 95% of all fish, fresh and salt water environments
What are 10 characteristics that all bony fish share?
smaller chamber of the heart. receives blood
atrium
larger chamber of the heart. pumps blood out of the heart
ventricle
the specific environment where an animal lives
habitat
opening to the lungs in the back of the mouth
glottis
tube leading to the stomach
esophagus
tubes that lead from the ear to the throat/ equalize the air pressure in the ears
eustachian tube
ear drum/ located behind the eyes
tympanum
produces bile that is used in digestion
liver
produces insulin in digestion
pancreas
stores bile-chemical that helps break down food
gallbladder
begins the digestive process
stomach
area of gas exchange
lungs
insolation/keeps internal organs warm/source of energy
fat body
stores blood/recycles blood
spleen
stores urine
bladder
filters blood and produces urine
kidney
most digestion of food takes place
small intestine
most water is taken up into the body here/produces solid waste
large intestine
amphibians spend their larval stage in water and their adult life on land
Why is it said that amphibians have a double life?
amphibian's movement: have legs and muscular limbs to get around/ fish's movement: uses fins to swim in water/ amphibian's skeleton: very strong/ fish's skeleton: could be made out of cartilage
Compare an adult amphibian's skeleton and method of moving to those of a fish.
the area becomes drier and amphibians need a moist environment/ amphibians have extremely thin skin, so they are sensitive to changes in the environment
How has forest destruction affected amphbians? Why has it had this effect?
a salamander needs to either breathe from lungs or its skin, so if it can not breathe through either of those, it can not survive
Why can a lung-less salamander not survive if its skin dries out. Explain why.
in water
where do amphibians start their life?
on land
where do amphibians spend their adult life?
in the lungs and through their skin
where do amphibians obtain oxygen?
thin and moist skin
what type of skin do amphibians have?
three
how many chambers does an amphibian have in their heart?
two
how many atria does an amphibian have?
one
how many ventricles does an amphibian have?
receives blood
what does the atria do?
one atrium receives blood from body/the other atrium received blood from the lungs
what two places does the atria receive blood?
pumps blood
what does the ventricle do?
the body and the lungs
what two places does the ventricle pump blood to?
it mixes
what happens to oxygen-rich and oxygen-poor blood in the ventricle?
external and internal
what type of fertilization does the amphibian exhibit?
jelly
what are eggs coated with?
keeps the eggs moist and frees the eggs from infection
what does the jelly that coats the eggs do?
no
Do parents care for the eggs or larva?
metamorphosis
what do amphibians undergo from larva to adult stage?
no
Do frogs/toads-tadpoles resemble the adult?
yes
Do salamanders resemble the adult?
strong skeleton and muscular limbs
What two things do amphibians have to move on land?
large eyes
What kind of eyes do amphibians have?
yes
Can amphibians close their eyes?
amphibians have thin skins and no shells on their eggs
What are two reasons why environmental poisons are dangerous to amphibians?
weaken adult and young amphibians, kill amphibian eggs, and cause tadpoles to be deformed
List three effects environmental poisons can have on amphibian development.
1. fertilized eggs 2. legless tadpole 3. hind legs develop 4. front legs develop 5. adult frog
What are the five stages of metamorphosis in a frog?