Across
- 5. Insect fertilization
- 6. Male reproductive organ
- 7. Method of fertilization
- 8. The skeletal structure
- 9. Air tubes used for respiration
- 10. Outer shell around the embryo
- 11. Insect blood
- 12. Period between hatching and adulthood during incomplete metamorphosis
Down
- 1. Part of body where the digestive, reproductive, and excretory systems are located
- 2. Period when the first insects lived on Earth
- 3. The middle segment of the body where the wings are located
- 4. Insect heart
- 10. The eye structure
- 11. Where the sensory organs are located