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Are turtles considered amniotes?

Yes, turtles are considered amniotes because they are vertebrates that have an amniotic egg, which is a key characteristic of amniotes.


Are curassows amniotes?

Currassows are one of the three major groups of birds known as cracids. Most of these birds live in South America. Amniotes are eggs that contain amniotic fluid in them. Currassow eggs do contain amniotic fluid, therefore currassows are amniotes.


Are lungfish amnions?

Lungfish are not amniotes; they belong to a group called dipnoi, which are a type of fish. Amniotes are vertebrates that possess an amniotic egg, a characteristic that includes reptiles, birds, and mammals. Lungfish have adaptations for breathing air and can survive in low-oxygen environments, but they do not have the amniotic structure associated with amniotes. Therefore, while lungfish are an interesting evolutionary link, they do not fit the classification of amniotes.


6 How did the discovery of temporal skull holes help scientists determine phylogeny of amniotes?

How did the discovery of temporal skull holes help scientists determine phylogeny of amniotes


How does anatomy and circulation differ among amniotes?

Amniotes differ from earlier vertebrates in that they can complete their life cycle on land rather than in water. Earlier vertebrates had to have water to lay eggs at the minimum. Amniotes developed eggs with amnios which allowed the eggs to be laid on land or carried by the mother.


Why don't amniotes need to return to water to reproduce?

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What is the meaning of aminiotic sac?

sac in which the fetus develops in amniotes


Are these Amniotes vertebrates House sparrow garter snake African elephant?

Yes


Why are mammals considered to be amniotes even though most mammals do not produce an amniotic egg?

Mammals are considered amniotes because they share a common ancestor with reptiles and birds, which do produce amniotic eggs. While most mammals do not lay eggs, they still develop within an amniotic sac in the uterus. The presence of extraembryonic membranes, such as the amnion, allantois, and chorion, during embryonic development in mammals is a key characteristic that aligns them with other amniotes.


What environment do amniotes inhabit?

Amniotes inhabit a wide range of environments, including terrestrial, aquatic, and aerial ecosystems. They are primarily adapted to life on land, thanks to features like the amniotic egg, which allows them to reproduce in dry conditions without the need for water. This adaptability enables amniotes, which include reptiles, birds, and mammals, to occupy diverse habitats from deserts and forests to grasslands and oceans. Some species, like certain reptiles and birds, have also evolved to thrive in aquatic environments.


Are leatherback sea turtless anphibians?

Leatherback Turtles are classified as amniotes, and unlike amphibians, don't lay their eggs underwater.


What makes amniotes able to be completely terrestrial?

Amniotes are able to be completely terrestrial due to several key adaptations. They possess a specialized egg structure, known as the amniotic egg, which contains membranes that protect the embryo from desiccation and provide a stable environment for development. Additionally, they have impermeable skin that reduces water loss and efficient respiratory systems, allowing for effective gas exchange in a terrestrial habitat. These adaptations enable amniotes to thrive in dry environments, unlike their amphibian ancestors who are more reliant on aquatic habitats.