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Terrestrial arthropods have a series of openings called spiracles at the body surface. Spiracles open into tiny air tubes called tracheae, which expand into fine branches that extend into all parts of the arthropod body
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Do aquatic arthropods exchange gases through a tracheal tubes b gills c their exoskeleton d book lungs?
Aquatic arthropods mostly exchange gases through (c) gills; some (like the horseshoe crabs) have book gills. The "book lungs" term usually applies to most arachnids like scorpions and spiders, which are terrestrial; most other terrestrial arthropods exchange gases through special holes in their segments called spiracles, attached to the tracheal tubules/tracheola which connect directly to the tissues.
Do arthropods and mollusks have lungs?
No for arthropods; yes for some molluscs. The larger aquatic arthropods like lobsters and crabs accomplish gas exchange using gills. Smaller ones like the land-based insects have holes (spiracles) in the exoskeleton and a tube system to facilitate gas exchange necessary for respiration. In this case, unlike mammals which use lungs to oxgenate blood which is pumped to the tissues, the tracheal tubes from the spiracles deliver oxygen directly to the tissues. Aquatic molluscs have gills for gas exchange whereas molluscs adapted to live on land like snails do have a lung.
How do arthropods exchange gases?
There are several methods arthropods use for gas exchange; insects have holes in their segments called spiracles, connected to a trachea and tubules which deliver oxygen directly to tissues without needing to go through a bloodstream; and also remove waste gasses. Arachnids may use a type of simple lung called a book lung, comparable to a book gill in a similar stacked spatial arrangement for some aquatic arthropods. Other marine arthropods use gills for gas exchange, such as crabs and lobsters; crabs can continue to use gills on land so long as they remain moist. The simpler and smaller arthropods are able to perform gas exchange across their entire body surface and need no additional specialized gas exchange structures.
Is Earth a gas giant?
Earth is a rocky planet because the gas giants are in the outer planets and earth is in the inner planet.
What characteristics distinguish arthropods from mollusks and worms?
The vertebral column or spine comprises individual bones (vertebrae) as part of an internal skeleton or endoskeleton. Arthropods differ in that they have no bony internal skeleton, instead they rely on an external or exoskeleton, whose rigidity creates the defining characteristics of the arhtropod phylum; the joint appendages and segmented body.
Do aquatic arthropods exchange gases through a tracheal tubes b gills c their exoskeleton d book lungs?
Aquatic arthropods mostly exchange gases through (c) gills; some (like the horseshoe crabs) have book gills. The "book lungs" term usually applies to most arachnids like scorpions and spiders, which are terrestrial; most other terrestrial arthropods exchange gases through special holes in their segments called spiracles, attached to the tracheal tubules/tracheola which connect directly to the tissues.
Why is water always lost from the gas exchange surface?
Water is lost from the gas exchange surface of terrestrial organisms because gases must be exchanged with air. Terrestrial organisms have a high water potential, therefore when the gas exchange occurs water will be lost.
Which organism has a gas exchange surface adapted for a terrestrial environment?
earthworms.
Where in the respiratory tract does gas exchange occur?
The gas occurs by simple diffusion through the cells.
How does gas exchange occur in sponges?
gills
Gas and nutrient exchange occur in the?
capillaries
Where does the majority of gas exchange occur?
the alveolus
Where does gas exchange occur in a plant?
in the leaf
Where does gas exchange occur in seaweed?
in the leave
Where does gas exchange occur?
gas exchange occurs between the thin walls of the alveoli and the thin walls of the capillaries
In which structure does gas exchange occur?
gas exchange occurs between pulmonary capillaries and the alveoli in the lungs.
How does gas exchange occur in clown fish?
in their gills.
