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An invertebrate is a species of animal which does not have a backbone, such as spiders, insects, mollusks, lobsters and crabs. It is estimated that as much as 97% of all animal species are invertebrate.
See the fact file below for more interesting Invertebrate facts or alternatively you can download our comprehensive worksheet pack to utilise within the classroom or home environment
An invertebrate is an animal that does not have a backbone. Ninety-seven percent of all animal species are invertebrates. Insects, annelids, mollusks, echinoderms, protozoa, crustaceans, and arachnids are all invertebrates.
Invertebrates share four common traits:
- They do not have a backbone.
- They are multicellular. All the cells have different responsibilities in keeping the animal alive.
- They have no cell walls, like all other animals.
- They reproduce by two reproductive cells, or gametes, coming together to produce a new organism of their species.
- Invertebrates are ectotherms (cold-blooded): they warm their bodies by absorbing heat from their surroundings. Most invertebrates live in water or spend at least some part of their life in water.
- Some groups of invertebrates live on land. Common examples include worms, insects and spiders. These invertebrates need to have special structures to deal with life on land.
- Most invertebrates change form as they grow, going through a process known as metamorphosis.
Types of Invertebrates
Terrestrial invertebrates include the below-mentioned groups and many also have members that live in marine environments and freshwater.
- Velvet worms
Freshwater and marine invertebrates include the following groups and some of them also have land-dwelling members.
- Sea stars and sea urchins
- Anemones and corals
- Snails and slugs
- Bluebottles and jellies
- Crabs, prawns, crayfish and lobsters
Invertebrates are by far the largest group in the animal kingdom: 97 percent of all animals are invertebrates. So far, 1.25 million species have been described, most of which are insects, and there are millions more to be discovered. The total number of invertebrate species could be 5, 10, or even 30 million, compared to just 60,000 vertebrates.
This bundle contains 11 ready-to-use Invertebrates worksheets that are perfect for students who want to learn more about an invertebrate which is a species of animal which does not have a backbone, such as spiders, insects, mollusks, lobsters and crabs. It is estimated that as much as 97% of all animal species are invertebrate.
Download includes the following worksheets:
- Yule Facts
- December Solstice
- Colors of Yule
- Solstice Facts
- The Sun Gods
- Yuletide Symbols
- Mapping Yule
- Thor: The God of Thunder
- Festival of Lights
- Photo Log
- Yule to Remember
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Link will appear as Invertebrate Facts & Worksheets: https://kidskonnect.com - KidsKonnect, November 12, 2017
Use With Any Curriculum
These worksheets have been specifically designed for use with any international curriculum. You can use these worksheets as-is, or edit them using Google Slides to make them more specific to your own student ability levels and curriculum standards.