Select the correct answer out of the available choices given under each question.
(i) From the graph it seems likely that the rate of bubbling per minute at 50 cm., would have been:
(a) 2-0 (b) 2-5 (c) 3-0 (d) 3-5 (e) 4-0
(ii) The gas produced by the plant during the experiment was :
(a) Air (b) Oxygen (c) Carbon dioxide (d) Nitrogen (e) Hydrogen
(iii) The gas collected comes due to the breakdown of:
(a) Glucose (b) Starch (c) Water (d) Air (e) ATP
(iv) If ice cubes were added to the water, the rate of bubble formation would :
(a) Remain the same.
(b) Increase because m ore water is added.
(c) Decreases because the temperature drops.
(d) Decreases because water freezes.
(e) Cannot tell from the information given.
(v) If some sodium bicarbonate is added to the water the rate of bubble formation:
(a) Increases because more respiration occurs.
(b) Increases because more photosynthesis occurs.
(c) Increases because the gas become less soluble.
(d) Decreases because carbon dioxide acts as a limiting factor.
(e) Decreases because respiration decreases.
