ANOTHER TYPES OF STEMS
There are some special types of stems. The most important are:
Rhizomes are stems that grow horizontally under the surface of the ground. From them roots are born, moving downwards into the ground and other herbaceous stems follow the opposite way searching the air. So, apart from storing food, they are a way of plant propagation. Canes would be a good example of them.
Bulbs are in fact buds adapted to leave under the ground, that store food provisions. Onions are bulbs.
They become very fat because of water accumulation. They use it as a reservoir for the long dry periods they have to stand. They are so well adapted to the environment that they have transformed their leaves into prickles, which besides increasing water provision, help the plant to keep herbivores out of range. Cacti are included in this group.
They do not grow below the ground but on the surface or very near to it. The most important are
These are weak spreading stems, running along the surface of the ground and producing new plants from their nodes. Strawberries belong to this group.
Stems that grow on the ground surface till they find something to get upright. They are slender, with long internodes. They can achieve their goal by means of:
Choose the correct answer in each case:
This cactus shows:
You think this plant is:
This plant shows:
More information about plants cultivation in the listing above.
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This material is for informational purposes only. In case of doubt, consult the doctor.