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What does A Fish and amphibians and reptiles and mammals and and Birds All Share?
Wiki User
∙ 11y ago
A heart!
respiratory systems,
all are heteratrophic organisms,
all use sexual reproduction (with a few exceptions here and there.)
Wiki User
∙ 11y ago
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Do Marsupials share characteristics with other animals from other groups?
Marsupials are mammals, so share all features with other mammals. As well, they are vertebrates, so share the characteristic of having a backbone with birds, fish, reptiles and amphibians. Like birds and reptiles, mammals breathe via lungs (rather than gills), and like birds, they are warm-blooded.
Are dinosaurs more closely related to amphibians or mammals?
Dinosaurs are more closely related to mammals. Both mammals and dinosaurs share a reptilian ancestor that they don't share with amphibians.
Are human beings related to reptiles?
Ultimately all organisms are related. Humans are mammals, which are not closely related to reptiles. Mammals and reptiles belong to a group of animals called amniotes, which they also share with birds. Amniotes include all land vertebrates except amphibians. The last common ancestor of mammals and reptiles lived over 300 million years ago in the Carboniferous period. Shortly after the first amniotes branched off from amphibians they split into synapsids, which became the ancestors of mammals, and sauropsids, which became the ancestors of birds and all modern reptiles.
What is kerattin?
Keratin is a type of structural protein that is found in the human skin, nails, and hair. Most other members of the kingdoms of Animalia share keratin in their skin, claws, and hair as well; reptiles, birds, amphibians, and mammals.
Reptiles and amphibians share a number of features except what?
Mode of reproduction
How are birds and lizards related?
And they are most closely related to crocodiles, which also came from archosaurs. This is what most people mean when they say that birds are reptiles, although technically, according to the phylogenetic system, birds, reptiles, and mammals all share a reptile-like ancestor.
What one characteristic do birds and mammals share that lampreys and mammals do not?
Birds and mammals are air breathers. Lampreys are not.
What is a brief description of the idea that birds developed from reptiles?
First there were fish and creatures living under the sea, they became amphibians that could walk on land, they became reptiles that could no longer go underwater, they then grew hair/fur and became warm blooded to what we now call mammals, the hair/fur became feathers and they grew wings and a beak to become birds. This happened over hundreds of millions of years and is called the theory of evolution discovered by Charles Darwin.
What is one chacteristic that mammals and reptiles share?
Both are amniotic oxygen-breathing vertebrates.
Are all dinosaurs reptiles?
All reptiles are diapsids. Mammals (like you and I) are, in contrast, synapsids. So in that respect all reptiles are alike. However, I would not say they were all alike. Snakes are reptiles but lack limbs. Alligators are also reptiles, as are lizards. Tuatara, gavials, amphisbaenids, and tortoises each represent one of the four main modern orders of reptiles. They share some characteristics--just as you and I do, but I would not say they were all alike.
How do mammals differ from birds and what adaptation's do they share?
Adaptations that birds and mammals share include the fact that they are both warm blooded, they are both vertebrates, and they both have four chambered hearts. Unlike mammals, birds are covered in feathers and all birds lay eggs. Unlike birds, mammals are covered in hair, produce milk for their young, and nearly all mammals give birth to live young (except a few species that lay eggs).
Did modern reptiles evolve from dinosaurs?
No, modern reptiles did not evolve from dinosaurs. Modern reptiles and dinosaurs both belong to the group known as archosaurs, but they evolved along separate lineages. Dinosaurs went extinct around 65 million years ago, while modern reptiles, such as snakes, lizards, and turtles, continued to evolve and diversify.
