This chapter asks you to explain how a plant is built and how it grows. The four lessons move from the tissues, to the growing regions, to reading results from experiments.
It sits inside SPM Biology, and it links to transport in plants.
How do the four lessons connect?
Each lesson supplies something the next one needs.
- Relating plant tissues to function gives you the tissue names and what each one does.
- Comparing primary and secondary growth separates growth in length from growth in width.
- Interpreting meristem activity shows where new cells are made and where they enlarge.
- Reading plant-growth investigation data turns measurements into a fair conclusion.
What does one tree trunk show?
Picture a rambutan tree that has stood in a garden for ten years. Its branches reach higher every year because cells divide at the tips, and this is primary growth. Its trunk is thicker each year because a ring of dividing cells inside the trunk adds new xylem and phloem, and this is secondary growth.
The wood you see in the trunk is old xylem. The xylem carries water up, and its thick walls also hold the tree upright. One tree shows tissue function, two kinds of growth and the work of meristems together.
Who should start where?
If tissue names still swap in your mind, begin with lesson one. If you can name the tissues but mix up the two kinds of growth, go to lesson two. If “meristem” is just a word to you, lesson three is the place to build the picture.
If you can explain the biology but freeze on tables of results, start at lesson four. After any lesson, try the plant organisation and growth practice set.
When does extra help make sense?
The chapter rewards careful wording, such as saying which tissue does what and naming the region where cells divide. A teacher who reads your written answers can point out where a term is correct but attached to the wrong job.
If you would like that, see online one-to-one Biology tuition and mention plant organisation and growth when you enquire.