Across
- 2. throbbing sensation felt in the artery.
- 4. the waste of birds consists mainly___
- 5. wall which divides the heart into two halves lengthwise.
- 7. water conducting tissue in plants.
- 8. blood component responsible for clotting.
- 10. _____ removes a small amount of waste in the form of sweat.
- 12. the pigment in red blood cell.
Down
- 1. circulation of blood is discovered by _______
- 3. Deoxygenated blood is carried back to heart by the _____.
- 5. instrument used to listen to our heart beat.
- 6. the process of removal of excess water through leaves of a plants.
- 9. ________ removes the carbon dioxide, produced during respiration.
- 11. bean shaped structure taking part in excretion.