Which artery carries dexygenated blood?

Name the artery which carry impure(deoxygenated) blood from heart to lungs

True or False Prawn heart carries only oxygenated blood.

Carotid artery carries:

Note the relationship between the first two words and suggest a suitable word for the fourth place: Pulmonary artery:Deoxygenated blood::Pulmonary vein...... .