Scheme of Work for Chapter 9

Cambridge Biology for the IB Diploma

Scheme of work for Chapter 9, Plant science

Syllabus section / Content / Time required / Outline of lessons / Coursebook resources / Worksheets / Teacher’s resources / Teaching ideas
9.1 / Plant structure and growth / 3–4 lessons / Outline the differences between monocotyledonous and dicotyledonous plants, including the distribution of tissues in a dicotyledonous stem and leaf
Explain the relationship between the distribution of tissues in the leaf and their functions; identify modified leaf, stem and root structures with different functions, such as tubers, storage and tendrils
Identify apical and lateral meristems in dicotyledonous plants and compare growth at the two; explain the role of auxin in phototropism / p214–219
Short-answer Qs p219
End-of-chapter Qs p232–235:
Q1, Q5 / Support: Q1, Q2 / Practical activities: microscopy practical using plant material; plant growth experiments using light and mazes
9.2 / Transport in angio-spermophytes / 4–5 lessons / Consider the root system and how a large surface area is provided for uptake of ions and water, listing the ways in which minerals are taken in; explain the process of active transport in absorbing mineral ions from the soil
Explain how water is carried by the transpiration stream and the importance of thickened cellulose, turgor and lignin in supporting terrestrial plants
Explain how the process of transpiration is affected by abiotic factors and regulated by opening and closing of stomata, influenced by abscisic acid
Outline the adaptations of xerophytes that reduce transpiration
Outline the role of the phloem in translocation of sucrose and amino acids from source to fruits, seeds and roots / p220–227
Short-answer Qsp227
End-of-chapter Qs p232–235:
Q2, Q3, Q6, Q9 / Extension: Q3, Q4
Support: Q3 / Practical activities: opportunity for assessed practical on transpiration in a leafy shoot; use of database at NASA; practical to simulate conditions in a greenhouse
Link to ICT: data loggers
Exemplar exam question
9.3 / Reproduction in angio-spermophytes / 3–4 lessons / Distinguish between pollination, fertilisation and seed dispersal including the use of diagrams of a dicotyledonous animal-pollinated plant
Explain the conditions needed for germination and show the external and internal structure of a dicot seed; outline the metabolic processes of germination
Explain how flowering is controlled in long-day and short-day plants and the role of phytochrome / p228–232
Short-answer Qsp232
End-of-chapter Qs p232–235:
Q4, Q7, Q8, Q10 / Extension: Q1, Q2
Support: Q2, Q4, Q5 / Practical activity: practical work involving growth of pollen grains
Link to Aspects of internationalism: distribution and flowering time of plant species

Note: 1 lesson = approximately 40 minutes