Main Vertebrate groups

12345678910111213
Across
  1. 2. fish do not have this part.
  2. 3. this is not a fish but live in water.
  3. 6. this feature helps them to swim through water.
  4. 9. this will help to balance the body while swimming
  5. 11. this is an amphibian whit out limbs to locomote
  6. 12. their body is covered with this and this will help to protect them from dehydration.
Down
  1. 1. It is a unique feature of frogs skin
  2. 3. skin the main respiratory organ of frogs
  3. 4. this is the respiratory organ of fish.
  4. 5. presence of dry skin with scales is a unique feature of this group.
  5. 7. This is the group that contain all birds.
  6. 8. the animals belong to this group have to spend part of their life cycle in water.
  7. 10. it is a group that contains animals well adapted to live in water.
  8. 13. this is a limbless reptile