3.3 Cnidarians

• Biologie
• Middelbare school
• havo, vwo
• Leerjaar 1

What have we discussed last lesson?

How do we call animals without an endo- or exoskeleton?

How do we call animals with an exoskeleton?

How do we call animals with an endoskeleton?

PHYLUM

KINGDOM

Sponges

Molluscs

Worms

Cnidarians

Animals

Echinoderms

Arthropods

Vertebrates

INVERTEBRATES

ARTHROPODS

VERTEBRATES

Sponges

Molluscs

Worms

Reptiles

Mammals

Cnidarians

Crustaceans

Arachnids

Insects

Myriapods

Echinoderms

Fish

Birds

Amphibians

Finish the sentence; an aquatic animal is an animal that lives in ...

Which of the following statements about sponges is NOT correct?

1. Sponges are attached to rocks or corals
2. Some sponges feel like rubber
3. Sponges eat by filtering water
4. Sponges can only reproduce asexually

What is meant by the term 'fragmentation'?

SYMMETRY

PREDATOR-PREY

SYMBIOSIS

A special relationship 

when two organisms 

from different species 

live together. 

For example: nemo is a (clown) fish and lives together with an anemone which is a cnidarian.