Photosynthesis

9.Which of the following are products of photosynthesis? (Select all that apply)

10.Arrange the following steps in the correct order to test a leaf for starch.

11.What colour would the iodine solution turn when added to the leaf?

12.Plants need carbon dioxide for photosynthesis, but they do not need oxygen for respiration.

13.In the experiment by van Helmont, a willow tree gained mass while the soil lost very little. What did he incorrectly conclude was the main source of the tree's mass?

14.Which of the following is NOT a use of glucose in plants?

15.Match each scientist with his contribution to the discovery of photosynthesis.

16.Which of the following are uses of glucose in plants? (Select all that apply)

17.A student places a potted plant in a dark cupboard for 48 hours before testing a leaf for starch. What is the purpose of keeping the plant in the dark?

18.In the leaf starch test, why is the leaf first boiled in water?

19.A farmer tests a leaf from a tomato plant in the afternoon and finds little glucose but a lot of starch. Why is this?

20.Photosynthesis takes place in the mitochondria of plant cells.

21.Match each part of the photosynthesis equation with its correct role.

22.In the lima bean investigation, Samir and Brooke used a heating pad as one source of energy. After 5 weeks, the plant on the heating pad had died. What does this suggest about the energy needed for photosynthesis?

23.A student tests a leaf for starch and finds that it turns blue-black. Which of the following is the best conclusion?

24.In the experiment to show that carbon dioxide is used to make bread rise, why is the gas from the test tube run through limewater?

25.In the starch test, a leaf is placed in ethyl alcohol to remove the chlorophyll.

26.Which of the following are reasons why a leaf is placed in ethyl alcohol during the starch test? (Select all that apply)

27.In the banana ripening investigation, which banana contains more starch and which contains more glucose?

28.What is the name of the process by which plants make their own food using sunlight?

29.Photosynthesis takes place in the chloroplasts of plant cells.

30.Which of the following is the main function of chlorophyll in photosynthesis?

31.Plants only use the light energy from the Sun for photosynthesis, not the heat energy.

32.Which of the following are requirements for photosynthesis to occur? (Select all that apply)

33.What is the main product of photosynthesis that plants use for energy?

34.Chlorophyll is used up during photosynthesis.

35.Complete the word equation for photosynthesis.

36.Name the process by which plants release energy from glucose.

37.In an experiment, a plant produces 12 grams of glucose in 6 hours of sunlight. How many grams of glucose would it produce in 10 hours at the same rate?

38.Name the process that the leaf could not carry out because it was in the dark.

39.Fill in the missing word: The process by which plants make their own food is called ________.

40.Name the gas that plants release during photosynthesis.

41.Complete the sentence.

42.Explain why a plant kept in a dark cupboard for several days will eventually die even if it is watered regularly.

43.Describe the test that the farmer conducted to show that the leaf contained starch.

44.In an experiment, a plant produces 12 grams of glucose in 6 hours of sunlight. How many grams of glucose would it produce in 10 hours at the same rate?

45.Girdling is a technique used to control the invasive quaking aspen tree: a ring of bark, including the tissue that carries dissolved sugars and other materials up and down the trunk, is stripped from the trunk (see figure). Select the TWO statements that explain why girdling stops the tree from using photosynthesis to cycle matter and energy through its whole body.