--- title: Spiders, scorpions and other eight-legged creatures — a lesson of Mova's school · trees and pragmatics description: «Spiders, scorpions and other eight-legged creatures», a lesson of the biology course of Mova's primary school, sentence by sentence with dependency trees and pragmatics. It begins: Spiders are not insects: they are arachnids, with eight legs, a body in only two parts, no feelers, no wings, and usua --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/biology/38-spiders-scorpions-and-eight-legged-creatures/) [home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [school](https://md.mova.elamur.ai/free/en/corpora/school/) / [Biology](https://md.mova.elamur.ai/free/en/corpora/school/biology/) / Spiders, scorpions and other eight-leg… # Spiders, scorpions and other eight-legged creatures Lesson 38 of the biology course of Mova's primary school: 18 sentences, each with its syntax tree and pragmatics. The lessons are written for Mova, and their agreed trees are part of Mova corpus 0.4 (CC BY-SA 4.0). How Mova does on its tests: [the lesson at school](https://md.mova.elamur.ai/free/en/school-run/biology/38-spiders-scorpions-and-eight-legged-creatures/). - [0](https://md.mova.elamur.ai/free/en/corpora/school/biology/38-spiders-scorpions-and-eight-legged-creatures/0/) — Spiders are not insects: they are arachnids, with eight legs, a body in only two parts, no feelers, no wings, and usually eight eyes. - [1](https://md.mova.elamur.ai/free/en/corpora/school/biology/38-spiders-scorpions-and-eight-legged-creatures/1/) — Look at a garden spider in the middle of its web on a dewy autumn morning: dry spokes, a sticky spiral, and the spider walking on the dry lines so it never gets stuck in its own trap. - [3](https://md.mova.elamur.ai/free/en/corpora/school/biology/38-spiders-scorpions-and-eight-legged-creatures/3/) — The family includes scorpions that glow under an ultraviolet torch, ticks that wait in long grass, and the daddy longlegs, which is not a spider at all. - [4](https://md.mova.elamur.ai/free/en/corpora/school/biology/38-spiders-scorpions-and-eight-legged-creatures/4/) — Spiders are mostly harmless to people, but a few are dangerous, so we watch and never handle wild ones, and we forget the myth about swallowing spiders in our sleep. - [5](https://md.mova.elamur.ai/free/en/corpora/school/biology/38-spiders-scorpions-and-eight-legged-creatures/5/) — Spiders are arachnids: they have eight legs, a body in two parts, no feelers and no wings, and most have eight eyes. - [6](https://md.mova.elamur.ai/free/en/corpora/school/biology/38-spiders-scorpions-and-eight-legged-creatures/6/) — An orb spider spins spokes of dry silk and then a sticky spiral, and it walks mostly on the dry spokes; many eat their old web and spin a new one. - [7](https://md.mova.elamur.ai/free/en/corpora/school/biology/38-spiders-scorpions-and-eight-legged-creatures/7/) — Spider silk is a protein made as a liquid and pulled out through spinnerets; some silk is stronger than steel of the same weight and can stretch a lot. - [8](https://md.mova.elamur.ai/free/en/corpora/school/biology/38-spiders-scorpions-and-eight-legged-creatures/8/) — In autumn male house spiders wander indoors looking for females, and they get stuck in the bath because they cannot climb its smooth sides. - [9](https://md.mova.elamur.ai/free/en/corpora/school/biology/38-spiders-scorpions-and-eight-legged-creatures/9/) — Swallowing eight spiders a year in your sleep is a myth: a big, warm, breathing sleeper is a place spiders keep away from. - [10](https://md.mova.elamur.ai/free/en/corpora/school/biology/38-spiders-scorpions-and-eight-legged-creatures/10/) — Spiders stretch their legs out by pumping blood into them, so when a spider dies the pressure is gone and its legs curl underneath it. - [11](https://md.mova.elamur.ai/free/en/corpora/school/biology/38-spiders-scorpions-and-eight-legged-creatures/11/) — Jumping spiders have two huge front eyes that see sharply and in colour, and they stalk and pounce instead of using webs. - [12](https://md.mova.elamur.ai/free/en/corpora/school/biology/38-spiders-scorpions-and-eight-legged-creatures/12/) — Most American tarantulas flick itchy barbed hairs at enemies, and female tarantulas can live 20 to 30 years. - [13](https://md.mova.elamur.ai/free/en/corpora/school/biology/38-spiders-scorpions-and-eight-legged-creatures/13/) — Almost all spiders have venom for their prey, but only a few, like black widows and the Sydney funnel-web, are dangerous to people, and antivenoms exist; no British spider is deadly. - [14](https://md.mova.elamur.ai/free/en/corpora/school/biology/38-spiders-scorpions-and-eight-legged-creatures/14/) — Baby spiders let out silk threads that catch the breeze and float away; this is called ballooning, and it lets them spread out so they do not all compete for the same food; some travel hundreds of kilometres, even far out to sea. - [15](https://md.mova.elamur.ai/free/en/corpora/school/biology/38-spiders-scorpions-and-eight-legged-creatures/15/) — Scorpions are arachnids whose outer shell glows blue-green under ultraviolet light; mothers carry their babies on their backs. - [16](https://md.mova.elamur.ai/free/en/corpora/school/biology/38-spiders-scorpions-and-eight-legged-creatures/16/) — The harvestman, or daddy longlegs, is an arachnid but not a spider: it has a one-piece round body, two eyes, no silk and no venom at all. - [17](https://md.mova.elamur.ai/free/en/corpora/school/biology/38-spiders-scorpions-and-eight-legged-creatures/17/) — Ticks are eight-legged arachnids that climb grass and grab passing animals to drink their blood; some carry Lyme disease, so a tick should be removed by an adult with a tick tool. - [18](https://md.mova.elamur.ai/free/en/corpora/school/biology/38-spiders-scorpions-and-eight-legged-creatures/18/) — The diving bell spider of European ponds lives underwater in a silk tent filled with air from the surface. - ← previous: [Insects: butterflies, beetles, flies, mosquitoes, grasshoppers](https://md.mova.elamur.ai/free/en/corpora/school/biology/37-butterflies-beetles-flies-mosquitoes-grasshoppers/) - next →: [Octopuses, squid and cuttlefish](https://md.mova.elamur.ai/free/en/corpora/school/biology/39-octopuses-squid-and-cuttlefish/) - ↑ back to [Biology](https://md.mova.elamur.ai/free/en/corpora/school/biology/)