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advantages: gas exchange is possible via the chorion, there isn't a larval stage, the egg offers some protection
disadvantages: must be laid on land, stationary / must be protected from predators
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∙ 12y ago
Bharan Kalasapati
Advantages: Amniotic eggs allow for reproduction on land, protect the developing embryo from desiccation and mechanical injury, and provide a contained environment for gas exchange.
Disadvantages: These eggs are vulnerable to predation, require a significant investment of resources, and limit the mobility of the parent due to the need to guard the eggs.
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∙ 13y agoAn amniotic egg is externally coated by a partially-permeable shell (to allow for gas exchange whilst still retaining essential fluids like water) which is usually calcareous but can be leathery. Internally it contains the embryo lying next to a nutrient-rich yolk sac and an "allantois", a sac used to store embryonic waste materials. The embryo and aforementioned associated structures are all wrapped up in several different membranes and immersed in liquid.
The significance of the evolution of the amniotic egg is that it afforded greater independence to land animals; they would no longer have to return to water to lay their eggs as there was no risk of the eggs drying out. The amniotic egg also eliminates the need for a larval stage, allowing the young to mature further prior to hatching.
Bharan Kalasapati
It is the shape of the egg cell
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Does a spider lay amniotic eggs?
No, only reptiles, mammals, and birds have amniotic eggs.
Do frogs and toads have an amniotic egg?
No, frogs and toads do not lay amniotic eggs. They lay jelly-like eggs that require a moist environment to develop properly. The eggs do not have a protective amniotic membrane like reptiles or birds.
Does the octopus have an amniotic egg?
No, reptiles, mammals and birds have amniotic eggs because they lay their eggs on land.
Is a chicken egg amniotic?
Yes, a chicken egg is considered amniotic because it contains an amniotic membrane that surrounds and protects the developing embryo inside the egg. This membrane helps provide a suitable environment for the embryo to grow and develop.
Why must amniotic eggs be fertilized inside the female body?
Because, amniotic eggs contains placenta that could be only developed inside the females womb.
Does an owl have an amniotic egg?
Mammals, birds, and reptiles lay amniotic eggs, so, yes, owls have amniotic eggs. Amniotic eggs contain a yolk and aid in gas and energy exchange.
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.
Does a spider lay amniotic eggs?
No, only reptiles, mammals, and birds have amniotic eggs.
Do frogs and toads have an amniotic egg?
No, frogs and toads do not lay amniotic eggs. They lay jelly-like eggs that require a moist environment to develop properly. The eggs do not have a protective amniotic membrane like reptiles or birds.
What kinds of mammals lay amniotic eggs?
Monotremes lay amniotic eggs. Monotremes include just the platypus, the short-beaked echidna and the long-beaked echidna.There are two mammals that lay amniotic eggs. The two mammals that lay amniotic eggs are echidna and platypus.
Does the octopus have an amniotic egg?
No, reptiles, mammals and birds have amniotic eggs because they lay their eggs on land.
Do human being have amniotic egg?
No. An amniotic egg will normally have multiple parts, like a chicken egg. An aminiotic egg also is surrounded by amniotic fluid. A fish egg is a small embryo surrounded by a protective gel like substance that is similar to a shell.
What replaces the membranes and nutrition source of amniotic eggs in organisms that exhibit live birth without amniotic eggs?
allantois
What species lay amniotic eggs.?
Reptiles and birds have amniotic eggs, as well as the occasional mammal like the platypus and echidna.
What are the advantages and disadvantages of platypuses laying eggs?
a disadvantage is that there will be more platypuses and the advantage is that they will not be extinct.
Do most snakes lay amniotic eggs?
Yes, most snakes are oviparous, meaning they lay amniotic eggs. These eggs are enclosed within a shell that allows for gas exchange and protects the developing embryo.
Do lions have amniotic eggs?
yes
