1. (i) A pollutant which reduces the oxygen carrying capacity of blood.   2. (ii) The male reproductive cells of mammals.   3. (iii) Sheet of muscle between the thorax and abdomen of mammals.   4. (iv) The element required for clotting blood in man.   5. (v) The tube that leads from the ovary of the uterus.   6. (vi) Openings found on the under surface of dorsiventral leaves.   7. (vii) Tissue concerned with upward conduction of water in plants.   8. (viii) Condition of cell in which the cell contents are shrunken.