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Reptiles, mammals, and birds lay amniotic eggs, which contain a yolk to nourish the developing organism. Eggs are used to protect the organism as it develops, and the egg also aids in gas and energy exchange.
Wiki User
∙ 12y ago
Wiki User
∙ 13y agoAn amniote egg is an egg which has an amniotic sac in which the animal takes place. In the instance of evolution during the Paleozoic Era, the amniotic eggs were laid by the first reptiles who lived in water and came ashore to lay their eggs for reproduction.
it resists drying out
it permits oxygen and carbon dioxide to pass through
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Is a frog an amniote?
No they do not. The organisms that are classified as Amniota are birds, mammals, and reptiles. There organisms are believed to come from a primitive amniote in the precambrian era. The ancestor of the primitive amniote is an early tetrapod. This ancestor gave rise to ampbibians as well as the primitive amniote (which gave rise to mammals, reptiles, and birds). An Aminote just basically means that the organism has extraembryonic membranes (ie-allanotitic membrane, choronic membrane, yolk sac, and amniotic membrane).
Does development of the atomic egg made early reptiles less dependent on water?
There is no such thing as an 'Atomic' egg.However, the amniotes are a group of four-footed animals with backbones or spinal columns that have a terrestrially adapted egg. Amniote embryos, whether laid as eggs or carried by the female, are protected and aided by several extensive membranes, including an amniotic sac that surrounds the fetus. The membrains protect the egg form drying out on land.There is such thing as an Amniotic egg tho its in my science book :P
Is a size 3 egg a small egg a medium egg or a large egg?
3
Why are egg rolls called egg rolls if it don't have eggs in it?
This is because the egg rolls are dipped into egg so it is part egg. that`s why it is called Egg Rolls
What animals have a amnion?
No. Amniotes are a group of creatures whose eggs are adapted to live on land by use of one or more membrane layers surrounding the developing embryo, including placental mammals, egg laying mammals, reptiles and birds.
The amniote egg solved what amphibian problem?
The amniote egg allowed amphibians to place their eggs on dry land instead of in water. The water, amniotic fluid, was in the egg.
In the amniote egg the functions in gas exchange?
chorion
In the amniote egg what functions in gas exchange?
chorion
What in the amniote egg the is the primary food source for the developing embryo?
yolk
In the amniote egg the is a fluid filled membrane that protects the embryo?
amnion
What was the most significant evolutionary change that allowed reptiles to colonize all the land was the evolution of?
Amniote egg
In the amniote egg the is the primary food source for the developing embryo?
It's a sack and not an egg but the primary food source, the only one, is the placenta and the nutrients go via the umbilical cord.
What is an amniote?
An amniote is any of a variety of types of vertebrate which have an amnion - the sac in which an embryo is suspended - this includes mammals, birds, and reptiles.
Which of the following statements about reptiles is true?
They were the first organisms to develop an amniote egg. The young resemble the adult forms. They do not depend on a watery environment. They reproduce with internal fertilization. apex:)
What kind of amniote is a sloth?
meepp
What is an anamniote?
An anamniote is any animal which is not an amniote.
What actors and actresses appeared in The Amniote - 2009?
The cast of The Amniote - 2009 includes: Chad Brummett Courtney Cunningham as C.C. Emily Villela as Stephanie
