Across
- 3. how many groups of chordates are there?
- 7. do Agnatha have jaws? Negative or Positive?
- 9. what group from the animal kingdom inhabit moist areas?
- 10. what is the biological name for birds?
Down
- 1. what are Agnathas internal bones made of?
- 2. what animal have wings but does not fly?
- 4. Rays belong to which class?
- 5. what group from the animal kingdom breathes through lungs?
- 6. What type of animals lay eggs
- 8. what animal sucks blood?