1. (i) In which tube would you expect the greatest increase in dry weight of the pondweed? (i) 1 (ii) 2 (iii) 3 (iv) 4 (v) 5   2. (ii) In which tube would you expect to find the plant with the least amount of starch? (i) 1 (ii) 2 (iii) 3 (iv) 4 (v) 5   3. (iii) The tube in which most oxygen would be fiind is: (i) 1 (ii) 2 (iii) 3 (iv) 4 (v) 5   4. (iv) The tube in which least carbon dioxide would be find is: (i) 1 (ii) 2 (iii) 3 (iv) 4 (v) 5   5. (v) The tube in which the plant would survive for the shortest length of time is: (i) 1 (ii) 2 (iii) 3 (iv) 4 (v) 5