Photosynthesis

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72

Question 2

A student investigated the effect of light intensity on the rate of photosynthesis in Cabomba waterweed. They set up the apparatus as shown below and counted the number of bubbles of gas released per minute.

Diagram showing a boiling tube filled with water containing a piece of Cabomba pondweed with its cut stem pointing upwards. Bubbles are rising from the cut stem. The boiling tube is supported in a beaker of water acting as a temperature buffer. A ruler is laid out on the bench measuring the distance to an LED lamp light source.

Explain how the student could improve this investigation to obtain a more accurate measurement of the gas produced.

[2]

Photosynthesis

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72

Question 2

A student investigated the effect of light intensity on the rate of photosynthesis in Cabomba waterweed. They set up the apparatus as shown below and counted the number of bubbles of gas released per minute.

Diagram showing a boiling tube filled with water containing a piece of Cabomba pondweed with its cut stem pointing upwards. Bubbles are rising from the cut stem. The boiling tube is supported in a beaker of water acting as a temperature buffer. A ruler is laid out on the bench measuring the distance to an LED lamp light source.

Explain how the student could improve this investigation to obtain a more accurate measurement of the gas produced.

[2]

Photosynthesis

Question 2

Photosynthesis Questions

Photosynthesis

Question 2

Photosynthesis Questions