B4 - Organising animals and plants

Across

• 1. What transports red blood cells, white blood cells, platelets, CO2, urea and products of digestion? (6)
• 4. What covers the entire plant. It has a waxy cuticle which helps reduce water loss from the leaf surface? (9)
• 5. Capillaries have a _____ lumen - blood moves slowly - more time for diffusion (6)
• 7. An ____________ is an electrical device that produces a signal causing the heart to beat at a normal speed (10, 9)
• 8. _________blood passes into the left ventricle, through the aorta and into the rest of the body (10)
• 9. A _______ is a metal mesh tube that inserted into a blocked artery so that it remains open (5)
• 10. Where does the pulmonary vein take the blood to? (5)