Cutaneous respiration occurs in a wide variety of organisms, including insects, amphibians, fish, sea snakes, turtles, and to a lesser extent in mammals.

The respiration in unicellular organisms takes place through their general body surfaces or cell membrane. There is an exchange of oxygen and carbon dioxide through the body surface by the process of diffusion. Diffusion is the process of movement of a substance from higher concentration to the lower concentration.

RESPIRATORY SYSTEM IN BIRDS Birds’ respiratory system, the lung – air sac system, is the most complex and efficient gas exchanger that has evolved in air-breathing vertebrates.

Respiration takes place through the trachea and is named tracheal respiration. Centipedes, ticks, some mites, and spiders are some insects in which this type of respiration is seen. Tracheal system comprises tracheae and spiracles. A trachea is a system of strongly branched chitin-lined air tubes.

When this oxygen rich water reaches to gills the vessels take the oxygen from the water. So, among these three animals, earthworms and frogs can respire through skin but only frogs can respire through lung and skin both. So, the correct option will be frog.

Molluscs. Molluscs commonly possess gills that allow exchange of respiratory gases from an aqueous environment into the circulatory system. These animals possess a heart that pumps blood which contains hemocyanin as its oxygen-capturing molecule. The respiratory system of gastropods can include either gills or a lung.

Unicellular organisms respire by the process of diffusion. Diffusion is the process by which molecules fom a high concentration region move to a low concentration region. Unicellular organisms breathe through direct diffusion via the cell membrane.

Unicellular organisms such as amoeba and paramecium respire through their cell membrane. The cell membrane is thin and permeable to gases. They take in oxygen through the entire body surface and give out carbon dioxide. Exchange of gases takes place through the cell membrane by the process of diffusion.

beaked whale
Take Cuvier’s beaked whale (Ziphius cavirostris), the deepest-diving of all marine mammals, and the one scientists think holds the record for the endotherm that’s achieved the longest breath-holding session.

Insects, and some other invertebrates, exchange oxygen and carbon dioxide between their tissues and the air by a system of air-filled tubes called tracheae. Tracheae open to the outside through small holes called spiracles. hairs that filter out dust as the air enters the spiracles. …

In grasshopper, respiration is performed using air-filled tubes called tracheae, which open at the surfaces of the thorax and abdomen through pairs of spiracles. The tracheoles, found at the end of the tracheal tubes, are insinuated between cells and carry oxygen throughout the body.

The tracheal system is the most direct and efficient respiratory system in active animals. The tubes in the tracheal system are made of a polymeric material called chitin. Insect bodies have openings, called spiracles, along the thorax and abdomen.

Some animals such as amphibians are able to exchange gases through their moist skin. Fish have gills while mammals, birds, and reptiles have lungs. Your respiratory system is made of your nose and mouth, a tube called the pharynx, another tube called the trachea, and your lungs.

The anatomy and physiology that make this happen varies greatly, depending on the size of the organism, the environment in which it lives and its evolutionary history. In land animals the respiratory surface is internalized as linings of the lungs.

Respiratory System – All About Breathing. Your respiratory system is all about exchanging gases with the environment. Some animals such as amphibians are able to exchange gases through their moist skin. Fish have gills while mammals, birds, and reptiles have lungs.