1.
State what is meant by photosynthesis. [1]
JD SCIENCE
Plant structures and their functions
Answer all questions. Show working. Answers are in a separate file on the Worksheets page — do not look at them until you have finished.
2.
State what is meant by a limiting factor. [1]
3.
State what is meant by chlorophyll. [1]
4.
State what is meant by glucose in plants. [1]
5.
State what is meant by aerobic respiration. [1]
6.
State what is meant by anaerobic respiration in muscle. [1]
7.
State what is meant by anaerobic respiration in yeast. [1]
8.
State what is meant by the stomata. [1]
9.
State what is meant by xylem. [1]
10.
State what is meant by phloem. [1]
11.
Devon is asked about photosynthesis in a Edexcel Biology paper.
(a) Describe photosynthesis. [2]
(b) Explain why photosynthesis is important in this topic. [3]
12.
Devon is asked about a limiting factor in a Edexcel Biology paper.
(a) Describe a limiting factor. [2]
(b) Explain why a limiting factor is important in this topic. [3]
13.
Devon is asked about chlorophyll in a Edexcel Biology paper.
(a) Describe chlorophyll. [2]
(b) Explain why chlorophyll is important in this topic. [3]
14.
Devon is asked about glucose in plants in a Edexcel Biology paper.
(a) Describe glucose in plants. [2]
(b) Explain why glucose in plants is important in this topic. [3]
15.
Devon is asked about aerobic respiration in a Edexcel Biology paper.
(a) Describe aerobic respiration. [2]
(b) Explain why aerobic respiration is important in this topic. [3]
16.
Devon is asked about anaerobic respiration in muscle in a Edexcel Biology paper.
(a) Describe anaerobic respiration in muscle. [2]
(b) Explain why anaerobic respiration in muscle is important in this topic. [3]
17.
A plant produces 12 cm³ of oxygen in 4 minutes. Calculate the rate. [3]
18.
Light intensity is estimated as 1/d². If d = 25 cm, calculate 1/d². [3]
19.
Respiration releases 1200 J from 0.5 g of glucose. Calculate J per gram. [3]
20.
A leaf loses 0.8 g of water in 10 minutes. Calculate the transpiration rate in g/h. [3]
21.
Temperature rises from 10°C to 20°C and rate doubles. What would you expect from 20°C to 30°C if Q10 = 2, before denaturation? [3]
22.
A potometer air bubble moves 28 mm in 2 minutes. Calculate the mean speed. [3]
23.
Devon carries out the photosynthesis required practical with pondweed. This is a typical Edexcel required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
24.
Devon carries out testing a leaf for starch. This is a typical Edexcel required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
25.
Devon carries out the potometer transpiration practical. This is a typical Edexcel required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
26.
Devon carries out investigating respiration with germinating seeds and limewater or a respirometer. This is a typical Edexcel required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
27.
Compare photosynthesis with aerobic respiration. [4]
28.
Compare xylem with phloem. [4]
29.
Compare aerobic respiration with anaerobic respiration in muscle. [4]
30.
Compare a palisade cell with a guard cell. [4]
31.
Apply your knowledge of anaerobic respiration in yeast to this situation: CO₂ bubbles [3]
32.
Apply your knowledge of the stomata to this situation: reduce water loss [3]