IB Biology: B3.3-Adaptations of Sessile Organisms

Front

How do barnacles feed?

Back

Barnacles use protruding feather-like cirri to waft in food.

Front

What is the mobility of sponges?

Back

Sponges are completely immobile.

Front

What special cells do sponges have for feeding?

Back

Sponges have special cells called choanocytes with flagella to produce water currents for drawing water and nutrients.

Front

How do sea anemones attach themselves?

Back

Sea anemones fix themselves to the rock by their adhesive foot.

Front

Can sea anemones move?

Back

Yes, sea anemones can move slowly over the rock surface.

Front

How do sea anemones feed?

Back

Sea anemones feed with a ring of tentacles around the mouth.