Question

Animals with jointed legs are included in the phylum ___.

Answer 1

Phylum Arthropoda:

1. These are bilaterally symmetrical, triploblastic and segmented animals.
2. The body is divided into a head, thorax and abdomen.
3. In some animals, the head and thorax are fused and together form a cephalothorax.
4. In other animals, the thorax and abdomen fuse to form the trunk.
5. Their characteristic feature is the presence of paired jointed legs.
6. They have an open circulatory system which means that the blood flows through open spaces in the body cavity.
7. The blood is colorless.
8. A hard exoskeleton made up of dead chitin is present.
9. In arthropods the sexes are separate and they reproduce by sexual methods.
10. Two examples of phylum Arthropoda are cockroaches (Periplaneta), Houseflies (Musca domestica).

Final answer: Animals with jointed legs are included in the phylum Arthropoda.