1:00
en
CR
Amazing Animals
25
vertebrates: animals with backbone
vertebrae: backbone
endotherms: warmblooded animals
ectotherms: coldblooded animals
fins: fanlike structure
scale:protect fish
lateral line system:tiny sense organs on fish
gills: organs that take oxygen from water
denticles: feels like sandpaper(cartilaginous fish only)
swim bladder: balloon like organ
lung: takes oxygen from air
tadpole: frog larva
metamorphosis: the change between larva to adult
therapisds: mammal ancestors
amniotic egg: egg with shell
down feathers: feathers that insulate
contour feathers: feathers that help to fly
preening: the process of spreading oil onto feathers
lift: the upward force
brooding: keeping eggs warm by using body heat
mammary glands:feed young with milk
diaphragm: helps bring air to lungs
monotreme:mammals that lay eggs
Marsupials: mammals with pouches
placental mammals: embryos stay inside urterus
gestation period: time it takes for embryos to develop
Amazing Animals
Across:2. | time it takes for embryos to develop | 3. | helps bring air to lungs | 5. | backbone | 6. | protect fish | 8. | mammal ancestors | 9. | the upward force | 10. | coldblooded animals | 12. | keeping eggs warm by using body heat |
| 13. | organs that take oxygen from water | 16. | warmblooded animals | 18. | feathers that help to fly | 19. | fanlike structure | 20. | feathers that insulate | 21. | egg with shell | 22. | embryos stay inside urterus |
| | Down:1. | mammals that lay eggs | 3. | feels like sandpaper(cartilaginous fish only) | 4. | feed young with milk | 5. | animals with backbone | 7. | balloon like organ |
| 9. | takes oxygen from air | 11. | frog larva | 14. | the change between larva to adult | 15. | the process of spreading oil onto feathers | 17. | mammals with pouches |
| |
© 2013
PuzzleFast.com, Noncommercial Use Only
Amazing Animals
Across:2. | time it takes for embryos to develop | 3. | helps bring air to lungs | 5. | backbone | 6. | protect fish | 8. | mammal ancestors | 9. | the upward force | 10. | coldblooded animals | 12. | keeping eggs warm by using body heat |
| 13. | organs that take oxygen from water | 16. | warmblooded animals | 18. | feathers that help to fly | 19. | fanlike structure | 20. | feathers that insulate | 21. | egg with shell | 22. | embryos stay inside urterus |
| | Down:1. | mammals that lay eggs | 3. | feels like sandpaper(cartilaginous fish only) | 4. | feed young with milk | 5. | animals with backbone | 7. | balloon like organ |
| 9. | takes oxygen from air | 11. | frog larva | 14. | the change between larva to adult | 15. | the process of spreading oil onto feathers | 17. | mammals with pouches |
| |
© 2013
PuzzleFast.com, Noncommercial Use Only