UNIT 4. INVERTEBRATES ACTIVITY SHEET
1) What’s the main difference between vertebrates and invertebrates animals?
2) “Invertebrates don’t have skeleton”. Is it true? What kinds of
skeleton do you know?
3) How do sponges feed? Explain it, and label this picture
4) Which group of cnidaria can move? Which one cannot?
5) What are cnidoblasts used for?
6) Draw a picture of a jellyfish body structure. What do they
eat?
7) Complete this paragraph:
Cnidaria includes __________ and __________. ___________ reproduce sexually, and they
produce a ____________. ____________ reproduce asexually. They loose a part of their body,
and this part becomes a new ___________.
8) Complete this chart about worms:
Body shape Do they
have rings? Habitat Heterosexual or
Hermaphrodites
Respiratio
n
Nematodes
Playhelminthes
Annelids
9) Which groups of echinoderms do you know? What do they eat?
10) Do Echinoderms have skeleton? Which type?
11) Why are useful the ambulacral system, and the ambulacral
feet?
12) Label the picture of a sea star
13) Which invertebrates groups do these animals belong to?
