--- title: Worms, snails and slugs — a lesson of Mova's school · trees and pragmatics description: «Worms, snails and slugs», a lesson of the biology course of Mova's primary school, sentence by sentence with dependency trees and pragmatics. It begins: After a night of rain the lawn and the pavement are full of pink earthworms, and the paths are criss-crossed with the shiny silver trails of snail --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/biology/217-worms-snails-and-slugs/) [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/) / Worms, snails and slugs # Worms, snails and slugs Lesson 217 of the biology course of Mova's primary school: 17 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/217-worms-snails-and-slugs/). - [0](https://md.mova.elamur.ai/free/en/corpora/school/biology/217-worms-snails-and-slugs/0/) — After a night of rain the lawn and the pavement are full of pink earthworms, and the paths are criss-crossed with the shiny silver trails of snails and slugs. - [1](https://md.mova.elamur.ai/free/en/corpora/school/biology/217-worms-snails-and-slugs/1/) — These soft little animals have no bones at all: a worm moves by squeezing and stretching its rings while tiny bristles grip the soil, and a snail glides along on a wave of slime under its one big foot. - [2](https://md.mova.elamur.ai/free/en/corpora/school/biology/217-worms-snails-and-slugs/2/) — A worm has no eyes and no lungs; it breathes through its damp skin, which is why it must stay moist and dies quickly if it dries out in the sun. - [3](https://md.mova.elamur.ai/free/en/corpora/school/biology/217-worms-snails-and-slugs/3/) — Worms are the gardener's best friends: they pull dead leaves down into their burrows, eat them with soil and leave rich crumbly droppings, so a field full of worms is a field full of good soil. - [4](https://md.mova.elamur.ai/free/en/corpora/school/biology/217-worms-snails-and-slugs/4/) — Snails and slugs nibble our lettuces with thousands of tiny teeth, but they are food for thrushes, hedgehogs and frogs, so a garden needs them too. - [5](https://md.mova.elamur.ai/free/en/corpora/school/biology/217-worms-snails-and-slugs/5/) — Earthworms often come up to the surface after rain; one likely reason is that wet ground lets them travel across the surface without drying out, but scientists are not completely sure why they do it. - [6](https://md.mova.elamur.ai/free/en/corpora/school/biology/217-worms-snails-and-slugs/6/) — A worm cut in half does not become two worms; sometimes the head end survives and grows a new tail, but the tail end usually dies. - [7](https://md.mova.elamur.ai/free/en/corpora/school/biology/217-worms-snails-and-slugs/7/) — An earthworm has no eyes and no lungs; it breathes through its moist skin and can sense light with its skin. - [8](https://md.mova.elamur.ai/free/en/corpora/school/biology/217-worms-snails-and-slugs/8/) — Worms pull dead leaves into their burrows and eat them with soil; their droppings, called casts, make the soil rich, and their tunnels let air and water in. - [9](https://md.mova.elamur.ai/free/en/corpora/school/biology/217-worms-snails-and-slugs/9/) — A worm's body is made of many rings called segments, and tiny bristles on them grip the soil while the body squeezes and stretches. - [10](https://md.mova.elamur.ai/free/en/corpora/school/biology/217-worms-snails-and-slugs/10/) — A snail glides on a layer of slime that helps it grip and slide, even upside down on a leaf, and leaves a shiny trail behind. - [11](https://md.mova.elamur.ai/free/en/corpora/school/biology/217-worms-snails-and-slugs/11/) — A snail hides in its shell for protection, and in dry weather or winter it can seal the opening with a door of dried slime. - [12](https://md.mova.elamur.ai/free/en/corpora/school/biology/217-worms-snails-and-slugs/12/) — A garden snail has eyes at the tips of its two long tentacles, which it pulls in when they are touched; the two short tentacles below are for smell and touch. - [13](https://md.mova.elamur.ai/free/en/corpora/school/biology/217-worms-snails-and-slugs/13/) — A snail eats with a ribbon covered in thousands of tiny teeth that scrapes food like a file. - [14](https://md.mova.elamur.ai/free/en/corpora/school/biology/217-worms-snails-and-slugs/14/) — A slug is like a snail without an outside shell; it hides in damp, dark places by day and comes out at night or in rain. - [15](https://md.mova.elamur.ai/free/en/corpora/school/biology/217-worms-snails-and-slugs/15/) — A song thrush smashes snails on a favourite stone, called its anvil, to crack the shell; broken shells pile up around it. - [16](https://md.mova.elamur.ai/free/en/corpora/school/biology/217-worms-snails-and-slugs/16/) — A worm has no legs, and a snail or slug has one wide muscly foot instead of legs. - ← previous: [Garden birds: robins, blackbirds, tits and feeders](https://md.mova.elamur.ai/free/en/corpora/school/biology/216-garden-birds-robins-blackbirds-tits-and-feeders/) - next →: [Bees and wasps in the garden](https://md.mova.elamur.ai/free/en/corpora/school/biology/218-bees-and-wasps-in-the-garden/) - ↑ back to [Biology](https://md.mova.elamur.ai/free/en/corpora/school/biology/)