3.5 Molluscs

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

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

INVERTEBRATES

ARTHROPODS

VERTEBRATES

Sponges

Molluscs

Worms

Reptiles

Mammals

Cnidarians

Crustaceans

Arachnids

Insects

Myriapods

Echinoderms

Fish

Birds

Amphibians

An animal that eats other animals is called a ...

MOLLUSCS ARE VERY DIVERSE

but they all have a mantle (to protect organs) - layer of skin.

they have a muscular foot

either have gills or lungs

sometime possesing a shell

A special relationship between two organisms of different species is called ...

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

Which of the following statements about CNIDARIA is NOT correct?

1. Cnidaria are always attached to rocks or corals
2. Many cnidaria are predators that eat prey
3. Cnidaria have tentacles with stinging structures
4. Anemones are examples of cnidaria

The organism on the picture is a(n) ...

1. sponge
2. polyp
3. cnidarian
4. anemone

The organism on the picture is a(n) ...

1. sponge
2. polyp
3. cnidarian
4. anemone

What type of worm is this?

1. Flatworm
2. Segmented worm
3. Roundworm
4. You cannot see that in this picture

What type of worm is this?

1. Flatworm
2. Segmented worm
3. Roundworm
4. You cannot see that in this picture

What type of worm is this?

1. Flatworm
2. Segmented worm
3. Roundworm
4. You cannot see that in this picture

FLATWORMS

SEGMENTED WORMS

ROUNDWORMS

Most simple body plan

Live in water

Absorb nutrients through their skin

Live in soil and poo

Have a smooth & round body

Also called ringworm

Some are parasitic

Live in and eat soil

Their body is made up of ring-like structures

Some are parasitic

What is meant by the term 'parasite'?

MOLLUSCS ARE VERY DIVERSE

but they all have a mantle (to protect organs) - layer of skin.

they have a muscular foot

either have gills or lungs

sometime possesing a shell

STUDY 3.5 MOLLUSCS