Summary
Organs that support leaves and flowers and carry water and sugars through the plant.
In depth
Stems hold leaves in light, house vascular bundles and may store food (potato tubers) or photosynthesise (cacti). Dicot stems have bundles in a ring; monocot ones are scattered.
Vascular bundles are arranged differently in dicots and monocots. Stems also bear nodes where leaves attach and buds that can grow into branches. Modified stems include rhizomes, stolons and tubers.
Common mistake: potatoes are stem tubers, not roots.
Frequently asked questions
What is Stems?
Organs that support leaves and flowers and carry water and sugars through the plant.
Which area of biology covers Stems, and how advanced is it?
Stems is one of the 56 topics in Plant Biology. It is rated Beginner, so it suits learners who are starting out in biology. Related topics in this area include Primary and Secondary Growth, Monocots vs Dicots, Photosynthesis.
Can you give an example of Stems?
Woody stems have secondary growth producing annual rings.
What should I learn before Stems?
Stems is a Beginner topic, so no earlier topic is required. Other Beginner topics in Plant Biology that pair well with it include Plant Kingdom, Photosynthesis, Chlorophyll.
What topics are related to Stems?
The closest topics to Stems are Primary and Secondary Growth, Monocots vs Dicots, Photosynthesis, Xylem. Comparing them side by side is a good way to see how the ideas connect.
How can I check that I understand Stems?
Read the summary and the in-depth section, then use the quick check on the interactive lesson for Stems. To practise the whole of Plant Biology, use the Plant Biology quiz.
How is Stems different from Primary and Secondary Growth?
Stems: Organs that support leaves and flowers and carry water and sugars through the plant. Primary and Secondary Growth: Primary growth lengthens shoots and roots; secondary growth thickens stems into wood. Read both side by side and note what each one explains.
What is a common mistake about Stems?
Potatoes are stem tubers, not roots.
How should I study Stems step by step?
First, read the summary and write the definition in your own words. Second, read the in-depth section and note any example. Third, compare it with Primary and Secondary Growth and explain the difference aloud. Finally, take the Plant Biology quiz and come back to this page for any question you miss.