The fetus is surrounded by several protective layers before it is born. These layers may make up the egg or they may make up the placenta surrounding the unborn fetus (as in mammals).
How do Mammals reproduce? How do fish reproduce? How do Birds reproduce? Sex. Reptiles, like all of the other things I listed. Have sex.
All mammals reproduce sexually. Pretty much all vertebrates (fish, birds, mammals, reptiles, amphibians) reproduce sexually. Only some bacteria, some plants, fungi reproduce asexually.
N they are a seperate group like amphibians,mammals,reptiles,birds and fish
penguins are neither mammals or reptiles. penguins lay eggs.
While at first glance birds seem similar to mammals, they are more closely related to reptiles.
Birds and mammals both evolved from reptiles.
Birds are neither reptiles nor mammals. They are a separate class of vertebrate animals called Aves. Birds share characteristics with both reptiles and mammals, but they have distinct features that set them apart, such as feathers, beaks, and laying eggs.
1:fish 2: amphibians 3: reptiles 4: birds 5: mammals
birds are different than mammals
The 5 groups of vertebrates are fish,amphibians,mammals,reptiles and birds. Vertebrates are animals with a backbone.
Chimpanzees are mammals.
Yes, mammals, birds and reptiles are all vertebrates.