Tag: biology

Frog are amphibians and they can survive on land and water both. In water they breathe through gills while on land they have fully developed lungs to breathe. During hibernation, when they are not active they take oxygen from the moist skin by the process of diffusion. 

Gills are the respiratory organs of the fishes. It helps in gaseous exchange by absorbing the dissolved oxygen in water. The gills are covered by a bony covering which is known as operculum. It is used for respiration and feeding. Gills have gills lamellae through which the blood flows opposite direction to the water. The dissolved oxygen from the water diffuses into the blood capillaries.  

Frog are amphibians and they can survive on land and water both. In water they breathe through gills while on land they have fully developed lungs to breathe. It undergoes hibernation as it is cold blooded and the body temperature fluctuates with the surrounding. During hibernation the diffused oxygen is taken from moist skin.  

Fishes respire with the help of gills. Gills are richly supplied with blood capillaries and can readily absorb oxygen dissolved in water. But gills can not absorb gaseous oxygen. Since fishes cannot absorb gaseous oxygen they die soon after they are taken out of the water.

Gills are tissues which consist of cloth and fabric structures called filaments. These filaments have many functions including the transfer of ions and water, as well as the exchange of oxygen, carbon dioxide, acids and ammonia.

Frogs aren't restricted to breathing only through their lungs. Frogs that spend the coldest times of the year inside of the mud or within rotten heaps of leaves receive their necessary oxygen through their skin. This is referred to as cutaneous gas exchange. They use their skin to soak in the oxygen their bodies require. When frogs hibernate, they utilize the skin for any and all breathing. Damp skin is a must for subcutaneous gas exchange. If a frog's skin becomes dry, it will no longer be able to take in oxygen. Thus, option B is correct.

In animals, three main types of respiratory systems exist: respiration through the skin, respiration through the gills or respiration through internal air structures. Respiration through the skin, as in the hydra, involves the passing of molecules into and out of the body via diffusion. Aquatic animals use gills, which are structures composed of tissues and blood vessels that extend from the body, for their respiration needs. Most terrestrial animals use internal air structures, such as lungs or tracheae, to respire. 

While both the tadpole and the frog like other organisms need to take in oxygen from the environment, the respiratory mechanisms differ. The tadpoles make use of gills and the mature frogs respire need to take in oxygen from their environment, and the way they respire also changes as they develop. Tadpoles use gills, while mature frogs have three types of respiration- skin, buccal pumping and lungs

In animals, three main types of respiratory systems exist: respiration through the skin, respiration through the gills or respiration through internal air structures. Respiration through the skin, as in the Hydra, involves the passing of molecules into and out of the body via diffusion. Aquatic animals use gills, which are structures composed of tissues and blood vessels that extend from the body, for their respiration needs. Most terrestrial animals use internal air structures, such as lungs or tracheae, to respire. Cockroach, snail and earthworm has blood. 

Animal P always breathes through gills - fish; animal Q breathes both through moist skin and lungs - frog; animal R breathes only through its moist skin - earthworm; animal S breathes through its cell membrane - amoeba. Oxygen diffuses in and carbon dioxide diffuses out of its cell membrane.