2.1 The animal kingdom

Question 1

CHORDATA

Answer 1

This includes the sea squirts
and all the vertebrates (fish, amphibians, reptiles,
birds and mammals).

Question 2

ARTHROPODA

Answer 2

These are the joint-legged
invertebrates with segmented bodies and
typically with paired appendages (all insects,
spiders, scorpions, crustaceans, millipedes and
centipedes).

Question 3

NEMATODA

Answer 3

These are the ROUND WORMS.
A very diverse group with many being parasitic
(e.g. C. elegans).

Question 4

PLATYHELMINTHES

Answer 4

These are the FLATWORMS.
They have bilateral symmetry, internal organs but
no body cavity. Many are parasitic (e.g. the liver fluke
Fasciola hepatica, dicrocoelium).

Question 5

MOLLUSCA

Answer 5

Very diverse group and many
possess shells (e.g. snails, slugs, octopi, squid).