How do spiders differ from other arachnids?
How do spiders differ from other arachnids?
Spiders are different from other Arachnids in at least three ways: The abdomen is attached to the cephalothorax by a narrow waist. Spiders are the only Arachnids that are equipped with spinnerets at the hind end of the abdomen for silk production.
What is the scientific classification of a spider?
Araneae
Spider/Scientific names
Spiders belong to the phylum Arthropoda, along with insects and crustaceans. The order of spiders, Araneae—together with scorpions, harvestmen, and the large order of mites and ticks—make up the class of Arachnida.
What are spider adaptations?
Some spiders use hunting adaptations like camouflage, or body adaptations like suction-cup feet to thrive in their habitats. Spiders can even adapt their behaviors; some can mimic an ant or change the way they build their webs.
What type of abilities do spiders have?
Not only can spiders create strong and versatile webs and mimic ants, but certain species also have superior vision that allows them to see in the dark to stock and hunt prey. In addition to having top-of-the-line night vision, they also can see through UVA and UVB rays.
What separates spiders from arthropods?
Anatomically, spiders (as with all arachnids) differ from other arthropods in that the usual body segments are fused into two tagmata, the prosoma, or cephalothorax, and opisthosoma, or abdomen, and joined by a small, cylindrical pedicel, however, as there is currently neither paleontological nor embryological evidence …
What separates a spider from the other four arthropods?
All arthropods posses an exoskeleton, bi-lateral symmetry, jointed appendages, segmented bodies, and specialized appendages. The major arthropod classes can be separated by comparing their number of body regions, legs, and antennae.
What is the symmetry of spider?
bilateral symmetry
Spiders have bilateral symmetry.
How do spiders move?
Spiders walk by alternating two pairs of legs. While two pairs of legs are in the air, other two stay on the ground and support the body. This allows enough traction for spiders to hold themselves up vertically, even on the relatively smooth surfaces.
Do most spiders have six eyes?
Most spiders have eight eyes. Some species have six or fewer eyes, but they always come in an even number. Even those species with eight eyes don’t usually see very well. For example, most spiders that spin webs have poor eyesight and rely upon their senses of touch and smell to navigate their webs and find prey.
What is saltatorial locomotion in rabbits?
Saltatorial locomotion is a type of hopping gait that in mammals can be found in rabbits, hares, kangaroos, and some species of rodents. The molecular mechanisms that control and fine-tune the formation of this type of gait are unknown.
What are the characteristics of saltatory locomotion?
Saltatory (leaping) locomotion, sometimes called “ricochetal,” has arisen in several unrelated groups (some marsupials, lagomorphs, and several independent lineages of rodents). This mode of locomotion is typically found in mammals living in open habitats. Jumping mammals typically have elongate, plantigrade hind feet, reduced forelimbs, and long…
What is rectilinear locomotion in snakes?
Rectilinear locomotion. Unlike the three preceding patterns of movement, in which the body is thrown into a series of curves, in rectilinear locomotion in snakes the body is held relatively straight and glides forward in a manner analogous to the pedal locomotion of snails.
What is the difference between anguilliform swimming and serpentine locomotion?
In serpentine locomotion, in which the body is thrown into a series of sinuous curves, the movements appear identical to those of anguilliform swimming, but the similarity is more apparent than real. Unlike anguilliform swimming, when a snake starts to move, the entire body moves, and all parts follow the same path as the head.
