Invertebrates play a vital role in the ecosystem. They are responsible for pollinating plants, recycling nutrients, and providing food for other animals. Many invertebrates are also used by humans for food, clothing, and other products.
Here are some of the different types of invertebrates:
* Insects: Insects are the most numerous group of invertebrates. There are over 1 million different species of insects, making them the most diverse group of animals. Insects have six legs, three body segments, and a pair of antennae.
* Arachnids: Arachnids are a group of invertebrates that includes spiders, scorpions, ticks, and mites. Arachnids have eight legs, two body segments, and no antennae.
* Myriapods: Myriapods are a group of invertebrates that includes millipedes, centipedes, and symphylans. Myriapods have many legs, a long body, and two antennae.
* Worms: Worms are a group of invertebrates that includes earthworms, flatworms, and roundworms. Worms have a soft body, no legs, and no antennae.
* Mollusks: Mollusks are a group of invertebrates that includes clams, mussels, octopuses, and squid. Mollusks have a soft body, a mantle, and a shell.
* Echinoderms: Echinoderms are a group of invertebrates that includes starfish, sea urchins, and sea cucumbers. Echinoderms have a spiny skin, a water vascular system, and a unique body plan.