Topic A
Plant Organs and Structure
This section builds the vocabulary for the whole site: roots, stems, leaves, flowers, fruits, and seeds, then connects those parts to photosynthesis, germination, flowering, and potted plant observations.
Look at root systemsNotice upright stemsCompare leaves, flowers, and fruits
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Roots absorb water and hold the plant in place
Roots usually grow below the surface, absorb water and minerals, and help anchor the plant. Some roots grow in air, such as orchid aerial roots.
Observation point: are the roots getting both water and air? Is the potting mix too compact or wet?
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