Arthropods

4. a creature that is fully mature
6. an arthropod that has four pairs of legs and two body parts
9. an animal with two or three main body parts, with jointed legs, and without bones
10. the feathery organs that water animals use to get oxygen from the water
12. a tiny organ on the abdomen of some insects, which enables them to hear
15. the middle part of an animal having three main body parts, to which the legs are attached
17. the organs used by a spider to make silk for its web, found at the back of its abdomen
19. the stiff outer shell of an arthropod, which protects it and gives shape to its body
21. the stages that an insect goes through in becoming an adult

1. an arthropod with a crusty shell surrounding its body
2. the third stage in the life of an insect with four life stages, in which it is inactive and changes into an adult
3. an animal that eats other animals for food
4. the back part of the body of an arthropod.
5. a great change that certain insects go through as they grow to adulthood.
7. the hard, smooth case of the pupa stage of a butterfly, in which the caterpillar changes to a butterfly
8. a large eye made of many tiny simple eyes working together
11. the wormlike second stage in the life of an insect that passes through four life stages
13. to shed an outer covering, such as an exoskeleton
14. a young insect in the stage between egg and adult, looking much like an adult but smaller
16. a pair of long, thin feelers on the head of an arthropod.
18. a silk net woven by a spider to catch prey
20. a round or an oval body out of which young animals hatch; the first life stage of insects