Invertebrates are animals that have no backbone There

Invertebrates are animals that have no backbone.

There are more than 1 million kinds of arthropods on Earth.

An exoskeleton is a hard, outer covering

Molting is the periodic shedding of the exoskeleton.

A crustacean is an arthropod that has a hard, exoskeleton, two pairs of antennae, and a mouth for crunching and grinding.

Crustaceans can regrow certain parts of their body. Example: A stone crab can re-grow its claws. Most crustaceans live in the water and get oxygen from the water using their gills.

* Centipedes and millipedes are arthropods that have many legs. * Have _______ pair of legs in each segment. * Are carnivores and eat _____. * To capture its prey, a centipede puts _______ into the prey’s body with its ______ * Centipedes are found in ______ like under rocks and in the soil.

* Centipedes and millipedes are arthropods that have many legs. * Have ___ pairs of legs on each segment. * Eat _____ and are shy animals. * When scared, it _________ to protect itself. * Do not have ____. * Are found in _____like under rocks and in the soil.

* All have _____ legs. * Have a body divided into two parts:

* Spiders usually eat _____, but some spiders eat small ________ like hummingbirds. * Many spiders make webs out of _____. * Silk is _________________.

* Spiders catch their prey in many different ways. * Some spiders catch their prey in ____. * Some spiders ____ from their prey and then ____________. * When spiders catch their prey, it _______ it and _____ it. * Spiders breathe oxygen with _____.

* Scorpions usually live in _____ areas. * Most scorpions are _________. ** Nocturnal means __________ * During the day, scorpions hide ____________________. * When scorpions capture prey, they _____________________.

* Ticks and mites live on ________. * Some ticks and mites suck juices from __________. * Other ticks and mites are very tiny and live on _____.

* Many ticks suck the blood from _____. * Ticks can spread ______, such as Lyme disease.

*There are more kinds of insects than there all other animal species all together. * There could be ________ times as many insects as humans on Earth. * Insects have a body that is divided into ____ parts. * An insect’s body is divided into a ____, a _______, and an ______.

* Insects have _____ legs connected to the chest part. * Some insects’ legs are all the same size. Some insects have one pair of legs larger than the other two. * For example, a grasshopper has one pair of legs larger than the other two pairs. These longer back legs are used for _____.

* Insects eat a lot, so they grow very fast. As they grow, insects may molt and grow new ______, or they may change completely. * A huge change in appearance is called ____. * There are two kinds of metamorphosis: _______ and _______.

* In complete metamorphosis, insects like butterflies and moths have _______ stages of development. * The first stage makes an ____. * During the second stage, the egg hatches and a _____ comes out. * A caterpillar is the larva of an insect that will become a butterfly or a moth.

* During the third stage, a ______ is made. * A pupa is sometimes wrapped in a _______ or in a ________. * A cocoon is the pupa of a _______. A cocoon is made of ____. * A chrysalis is the pupa of a ______. * In the last stage, the insect is finally an adult.

* Incomplete metamorphosis happens in grasshoppers, termites, and dragonflies. * In incomplete metamorphosis, young animals that look like the ______ hatch from eggs. * As the young animals grow, they keep _____, shedding their exoskeletons, and getting larger.

* Most insects live alone. But, some insects are ______ and cannot survive alone. * These insects live in _______ or hives. * A colony is __________________________________

* An amazing example of a colony is a _____. * A beehive is ______________.

* All insects must protect themselves. * Bees and wasps have ________ to protect themselves. * Many other insects use _______. * Camouflage allows an insect to hide by _________________.

* Echinoderms are __________, ______, and _______. * Echinoderm means ________. All echinoderms have spiny skin.

• There are ______ characteristics of echinoderms. • All echinoderms have: • • • Spiny skin An internal skeleton A five part body A water vascular system Tube feet

* All echinoderms have _____. Some of them have small hair-like spines, like the starfish. * Some echinoderms have long spines, like the sea urchin.

* The internal skeleton of an echinoderm is made of ____________. * An echinoderm’s water vascular system is _________________. * The water vascular system also helps an echinoderm _____.

* Echinoderms have _____. * An echinoderm’s tube feet are used for _________________.

* Starfish are also called ______. * Starfish have _____ arms connected to a central body. * On the bottom of the arms are hundreds of ______ that look like suction cups.

* A starfish is able to re-grow its arms. * A starfish uses its tube feet to move and to open its food.

* Sea urchins have longer and sharper ____ that they use to protect themselves. * Some sea urchins have ____ spines.

* Sea urchins have a mouth hidden under its body. * A sea urchin uses its five teeth to eat ______. * A sea urchin is not very active. Sometimes, it does move slowly using its _____. When not moving it uses its feet to stick to the ocean floor.