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the amniotic egg first evolved during the Carboniferous period. It evolved from amphibian ancestors and gave rise to the predecessors of reptiles and eventually gave rise to reptiles. not sure if that answers your question or not... be more specific next time.
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What is an egg that holds fluid that protects the embryo?
The answer is Amniotic egg.
What is the function of the amniotic sac?
The amniotic sac contains amniotic fluid, which has a number of roles which are important in the development of the fetus. # It acts as a thermal buffer and a shock absorber, and therefore protects the developing fetus. # The fetus drinks the amniotic fluid (this is called fetal respiration) and urinates into it. # It lubricates delivery of the fetus at term. # It is isotonic, so has the same water potential as the blood. # It is exchanged by the fetal skin up to 20 weeks of pregnancy. # It maintains a sterile environment for the fetus. # It aids development of the muscles and bones of the fetus. # Allows free movement of the fetus. # The amniotic sac acts as a hydrostatic wedge during the first stages of labour. Also, cells that are sloughed off from the fetus into the amniotic fluid can be cultured after an amniocentesis to look for genetic conditions such as Down's syndrome, however, this is not really a purpose of amniotic fluid.
What is the name for the group of approximately 100 cells that from a fertilized egg?
Blastocyst
What Quran tell us about what came first chicken or egg?
Well its obvious that the egg came first and then you all say well then where did the egg come from just stare up for a minute and appreciate god for the egg because you know i love chicken and if the egg never came we wouldn't have chicken this is a pretty good answer kids stay in school :P
How does the sperm get in to the egg?
To get to the egg the sperm has to first go through sexual intercourse and then the sperm travels in a liquid till it reaches the fallopian tube where the egg is to get into the egg the sperm uses its tail. (only a brief way)
What group evolved from the amphibians with the development of the amniotic egg?
reptiles
After the amniotic egg evolved what was a result?
Animals could reproduce fully on land.
How is an amniotic egg important adaptation for reptiles?
The amniotic egg allows reptiles to reproduce on land, away from water.
What are two derived characteristics that allowed reptiles to become the first entirely terrestrial vertebrates?
Plato Users: A. Amniotic Egg, and Dry Scaly Skin.
What are four adaptations animals have to make to live and the problem each adaptation solved?
1. An amniotic egg.An amniotic land in an egg that can survive on land. The evolution of the amniotic egg allowed vertebrate land animals to move away from water bodies. They were previously tied to bodies of water because their eggs could not survive on dry land.
What is an example of an amniotic egg?
Chicken egg
Do turtles have amniotic egg?
No.
What is amniotic fluid in a chicken egg?
egg whites
What came first the chicken or the amniotic egg?
according to the Bible, the egg because God made 2 of every animal first. that's my religion.
What is an egg that holds fluid that protects the embryo?
The answer is Amniotic egg.
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
Do lobsters have amniotic eggs?
No. An amniotic egg is a bird or reptile egg, with a shell. Only vertebrates can have amniotic eggs. ^^ By extention, mammals also have amniotic eggs, but they're reduced in placental mammals (live birth). Platypi and echidnas still lay amniotic eggs though.
