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Needles on plants are not leaves
Needles on plants are not leaves
Needles are actually leaves because they do the same job as "board" leaves. Needles like "board" leaves, capture sunlight, take in carbon dioxide, and release oxygen, which provides the plant with food and air for us to breath.
However, unlike other leaves, needles do not shed in the fall. For example, needles on cacti have many purposes such as preventing water loss by reducing air flow around the cactus, collecting dew and then dropping to the roots and allowing the water to be absorbed by them, providing shade and keeping predators away.
Image below can be used to display different types of leaves to students!
Plants take in all substances needed to grow through their roots only
Plants take in all substances needed to grow through their roots only
Actually plants only received water and other mineral from their roots. Plants take in air through their leaves. Chloroplasts which are pigments located on the leaves absorb sunlight and carry out the process of photosynthesis to obtain glucose and oxygen.
Image below can be used to display the different point of entry to students!
Plants cannot survive in new locations
Plants cannot survive in new locations
Plants can be divided into two categories:
Native Plants: natural occurring and share a history with their community
Alien/Introduced Plants: species that live outside their native range and do not have a history with community
Alien/introduced plants can actually thrive in new areas because these species lack their natural predators, so they can have a major advantages in their new habitat. This allows them to be invasive and spread through the community.
Examples are phragmites, garlic mustard and purple loosestrife.
Invasive alien species are one of the top five threats to global biodiversity (along with things like climate change, deforestation). The largest impacts are seen on rare or at risk species.
Show this short video that talk about invasive species and their impacts!
Indigenous sustainability practices are not manageable
Indigenous sustainability practices are not manageable
Indigenous communities have the most knowledge of ecosystems and their patterns. Indigenous peoples have managed lands that are among the most critical ecosystems on the globe. More about this Societal Implication and Applications section!
Soil is required for seed germination to occur
Soil is required for seed germination to occur
Seed germination can occur without soil!
All seeds need is water, oxygen, and proper temperature to germinate. Some seeds also require proper light.
This can be shown to students through lab where they grow their own corn or bean seeds. This lab can be found under the lessons tab.
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