Do frogs have a spine? How do frogs breathe?

Frogs belong to the phylum Chordata, class Amphibia, order Anura, family Ranidae. In the eyes of frogs, there are only two colors, black and white, and what they see is abstract, that is, objects with black lines on a white background. Do you know that frogs have a spine? How do frogs breathe? Please open the following sharing to learn more!

Contents of this article

1. Do frogs have a spine?

2. How do frogs breathe?

3. How do frogs identify smells?

Do frogs have a spine?

Yes. Frogs belong to the phylum Chordata, class Amphibia, order Anura, family Ranidae. Adult frogs have no tails. Eggs are laid in water, fertilized externally, and hatched into tadpoles. They breathe with gills. After mutation, adults mainly breathe with lungs and also with skin. The upper jaw has teeth, usually vomerine teeth. The shoulder girdle is of the fixed chest type, the vertebrae are staggered, and the transverse processes of the sacral vertebrae are columnar; there is no intervening cartilage between the two distal joints of the fingers and toes. The eardrum is obviously hidden under the skin, and the skin is smooth or has warts.

The frog's body can be divided into three parts: head, trunk and limbs. The frog has four toes on its front feet, five toes on its back feet, and webbed feet. There are two slightly bulging small bags on both sides of the frog's head. Those are its eardrums, through which the frog can hear. The frog's back is green, smooth, soft, and has patterns, and its belly is white. This allows it to hide in the grass.

How do frogs breathe?

Adult frogs breathe mainly through their lungs and also through their skin. When they hatch into tadpoles, they breathe through their gills. Although frogs breathe through their lungs, the air does not enter their nostrils and directly reach their lungs through their trachea. Instead, when they inhale, they close their mouths, lower the bottom of their mouths, and enlarge their mouths, so that the outside air is sucked into their mouths through their nostrils, filling their mouths with air.

Frogs are animals of the order Anura in the class Amphibian. Adult frogs have no tails. The eggs are laid in water, fertilized externally, and hatched into tadpoles. They breathe with gills. After metamorphosis, the adults mainly breathe with lungs and also with skin. Frogs and toads have similar morphological structures. There is no strict distinction between the two types of animals. Toads have rough skin. Frogs are slender and good at swimming. Frogs are national third-level protected animals. Adult frogs breathe with lungs and also with skin, and can live on land out of water. It is the first step for organisms to walk from water to land, which is more advanced than other aquatic organisms, but reproduction still cannot be separated from water. Larvae need to undergo metamorphosis in water to grow.

How do frogs detect smells?

Unable to distinguish smells. Frogs catch prey by vision. In the eyes of frogs, there are only two colors, black and white, and what they see is abstract, that is, sketches of objects with black lines on a white background, so they cannot tell whether things are alive or not, but they can see insects in motion because the lines move. Frogs belong to the phylum Chordata, class Amphibia, order Anura, family Ranidae, and are amphibians. Adults have no tails. The eggs are laid in water, fertilized outside the body, and hatch into tadpoles, breathing with gills. After mutation, adults mainly breathe with lungs and also with skin. There are teeth in the upper jaw, usually with vomerine teeth. The shoulder girdle is of the fixed chest type, the vertebrae are of the staggered type, and the transverse processes of the sacral vertebrae are columnar; there is no intervening cartilage between the two distal joints of the fingers and toes. The eardrum is obviously hidden under the skin, and the skin is smooth or has warts. The tongue is generally oblong, and most of them have notches at the back end.