09 Plant Science (AHL)
Plant Science is one of my favourite topics for HL students as it is a real opportunity to link many of the core ideas of Biology together. Think of not just as a series of assessment statements to check off, but as a chance to revise everything you have learned so far.
Consider this diagram of germination. How many links across the syllabus can you make?
Here is the Essential Biology document for the whole topic. Presentations are below.
9.1: Plant Structure and Growth
Key terms: monocotyledon, dicotyledon, xylem, phloem, meristem, cambium, leaf, vein vascular bundles, adventitious, tap roots, waxy cuticle, palisade layer, spongy mesophyll, guard cells, stomata, chloroplasts, photosynthesis, stems, leaves, tubers, tuberous roots, tendrils, apical, lateral, mitosis, growth, wood, auxin, hormone, tropism, phototropism, geotropism.
9.2: Transport in Angiospermophytes
Key terms: xylem, phloem, evaporation, cohesion, adhesion, transpiration, mass flow, diffusion, active transport, translocation, ion exchange, symport, cation, anion, mycelium, boundary layer, sink, source, root, leaves, abscisic acid, stomata, xerophyte, CAM.
9.3: Reproduction in Angiospermophytes
Key terms: photoperiodism, flowering, Pfr, Pr, hormone, germination, sepal, petal, anther, filament, stigma style, ovary, pollination, fertilisation, seed dispersal, testa, micropyle, embryo root, shoot, cityledon, gibberelin, amylase, starch, maltose, glucose,
Click4Biology plant science page
North Harris College animations links
Life without bees? from David Suzuki’s blog.
And who can leave out this hillbilly-tastic video: