Section 3 Flashcards
What is an amphibian ?
A vertebrate that is econometric and spends its early life in water
What are some types of amphibians?
Frogs, toads and salamanders
After beginning their lives in water where do most amphibians spend their adulthood?
On land
What are the two major groups of amphibians?
Salamanders
Toads&frogs
What is the larvae of a frog or toad called?
Tadpole
What are the major stages in life cycle of a frog?
1- adult frogs reproduce sexually
/) eggs are fertilized outside the females body
3 swimming tadpoles hatch from eggs
4 hind legs develop
5- front legs develop
6 the tail is absorbed and development is completed
Once an adult amphibian lives on land what does it use to breathe?
Lungs ( during metamorphosis, an amphibian loses its gills and develops lungs)
What are lungs?
Organs of air breathing vertebrates in which oxygen gas and carbon dioxide gas are exchanged between the air and the blood
True or false? Many adult amphibians have a circulatory system of two loops and a heart with three chambers
TRUE
What are the two upper chambers of the heart called?
Atria
Are adult amphibians herbivores or carnivores?
Carnivores : they feed on small animals
What are the adaptations that amphibians have for living on land?
The develop lunngs
They have camouflage
They have strong skeletons and muscular limbs adapted for living on land
Do most amphibians undergo metamorphosis?
Yes TRUE think tadpole to frog
What does a fertilized egg in frog metamorphosis hatch into?
A tadpole
What legs develop first in frog metamorphosis ?
Hind legs
When metamorphosis is done what is the result
The tadpole had developed into a Ford. He has developed strong muscular legs( hind legs first then front) and lost the tail
Do adult amphibians have gills or lungs?
Lungs
True or false: amphibians have a one chambered heart
False they have a 2 chambered heart
How is a frogs coloring helpful
Camoflauge( it helps them survive becuase they blend in with the environment so they can hide and obtain food)
How have frogs and toads adapted for hopping and leaping?
They have powerful hind legs muscles and a skeleton that can absorb the shock of landing
What is the specific environment in which an animal lives?
Its habitat
What is causing the populations of amphibians to decrease?
The destruction of amphibian habitats
Why are amphibians especially sensitive to changes in their environment?
Skin is delicate
Their eggs lack shells
How does blood move in the circulatory system of an amphibian ?
They have a single loop and a heart with two chambers while the adult has no loops and a heart with three chambers
How do frogs obtain food?
They wait for their prey to come close
How do salamanders obtain food?
They actively stalk and ambush their prey
What are two adaptations that amphibians have for moving on land?
- strong skeletons
- muscular limbs
What is a tadpole?
Larvae of a frog
What are the names of the two types of chambers in an amphibians heart?
Atria and ventricle
Do adult amphibians have a 2 chambered heart?
NO , they have a 3 chambered heart
Do adult amphibians have lungs?
Yes
Does a tadpole have a two loop system with a 3 chambered heart?
NO- a tadpole has a one loop circulatory system with a two chambered heart, an adult frog has a two loop system with a 3 chambered heart
