CLASSIFICATION

TYPES OF LIVING THINGS

• There are many types of organisms living on the Earth:
• Some of them are unicellular and the most complex ones are pluricellular
• Some of them live in water and some live on land.
• Some of them produce their own food but some eat other organisms.
• Some organisms reproduce sexually and others reproduce asexually.

Untitled Slide

• Scientists need to organize these different types of organisms into groups: the five kingdoms.

VERTEBRATES AND INVERTEBRATES

• In the animal kingdom, there are two main groups of organisms: vertebrates and invertebrates.

VERTEBRATES

• Animals with a backbone and an internal skeleton called endoskeleton.
• Examples: mammals, fish, reptiles, amphibians, birds.

INVERTEBRATES

• Animals without a backbone. Some of them have a external skeleton called exoskeleton (insects, crabs, lobsters)
• Some others don't have exoskeleton (jellyfish)

FILL IN THE GAPS USING THESE WORDS

• INVERTEBRATES-ORGANISMS-KINGDOMS-BACKBONE-EXOSKELETON
• Scientists divide ________ into five _______. Within the _______ kingdom, there are two groups: vertebrates and invertebrates. All animals with a ________ are classified as vertebrates, while the animals with no backbone are _______. Some others have an _______.