For respiration, the operculum covers this organ.
Gills
What is mucus?
Covering on the skin of the amphibians that sometime can be poisonous.
What thing that contains protein kertains that help reptiles’ skin from desiccation and abrasion?
Scales.
Do birds have a urinary bladder?
No
Why do mammals have middle year?
To hear higher pitch sound.
This organ help the fish to Homeostasis.
kidneys
What kind of feet does amphibians have.
Webbed feet.
What result the species can survive on less than 10% food energy.
Ectothermic
Why do birds have small gonads?
Help to increase In sizes in the breeding stage.
Where does notochord located in mammals?
Spine.
Explain how swim bladder works to help fish swim.
fills with gas, the fish rises, when gas leaves the bladder, it deflates and fish sinks
Why amphibians have “double life”?
Descendants of ancestral organisms that evolved some, not all, adaptations for life on land
What is the evolution shows on reptiles?
They are the first animals that la amniotic eggs that didn’t need to be deposited in water. It is protected by a hard shel/ First animals completely live out of the water.
What features helps a bird to fly?
Feathers, airfoil shape wings, lightweight bones, air sacs.
What is the 3 types of mammals? Give each an example.
Monotremes, Duck-billed platypus; Marsupials, kangaroo; Eutherians, human.
How do we find the age of the fish.
Through the layers of the scales.
What are the differences on eating between larvae and adult?
Larvae: herbivore, Adult: carnivore
What is the benefits of amniotic eggs.
A tough shell keeps the amniotic egg from drying out and protects the embryo. They can be laid under rocks, in the ground, or even in the desert.
How do taxonomists classify birds.
To classify birds into orders and families taxonomists most often use morphological evidence from beaks, feet, plumage, bone structure, and musculature.
What is hatchlings?
nursed from milk that oozes through the skin on the belly.
What are the 2 main features of fish associated with the habitat in which they live?
They do not have limbs, instead, they have pairs of fins. They do not use lung to breathe, they use gills instead.
Amphibians have a double loop heart or a single loop heart, explain what the answer means.
Double loop, heart-lungs-heart-body
How many chambers of heart does a reptiles have?
3 chambered heart.
Why birds have a high metabolic rate?
They are smaler so they use more energy.
Which group includes most mammals in the world?what percent?
Eutherians, 95%