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March is for Gardening: Parts of Plants We Eat Explore different parts of a plant and identify which parts we eat! Have you ever thought about how the fruits and vegetables that are on your plate grow? Or which parts of the plant you eat? Afterall, according to Harvard University, 50% of what we eat everyday should be a mixture of different fruits and vegetables. We eat broccoli florets but not the roots they grow from; celery stems but not the flowers that appear later in the season; ears of corn but not the husks that enclose them. Many plants have the same structure, but different plants provide us (and animals) with their own unique parts that we can eat to stay strong and healthy! Think about your favorite The Healthy Eating Plate from Harvard University, fruits and vegetables and how they grow…which School of Public Health. Source. part(s) of the plant do you eat? The parts of plants that we eat are roots, stems, leaves, flowers, fruits, and seeds. Roots are the part of the plant that support the rest of the plant. Roots grow underground and keep the plant attached to the soil. This is where the plant will intake nutrients and water. Stems grow from the roots and are the main stalk of a plant. Leaves grow from the stems. They absorb sunlight and turn it into food through a process called photosynthesis, and they are also the main organ used in transpiration which is their way of releasing water back into the atmosphere. Flowers also grow from the stems of the plant. When flowers mature, they will often time produce seeds or fruit. Fruits are the seed baring structure in a flowering plant. Fruits grow after a flower has bloomed, matured, and been fertilized. Plant structure. Source. Seeds are a unit of reproduction for a plant. Something that is important to be aware of is the use of terms in the botanical world verses the culinary world. In the scientific world, a tomato is a fruit because it forms from a flower and bares the seeds of the plant that it comes from. In the culinary world and in the world of nutrition tomatoes are considered vegetables based on how they are generally cooked with and their nutritional value. So, a tomato is a fruit and a vegetable in different contexts. This is true for many other botanical fruits. 1 Activity: Identify the Parts of Plants That We Eat Each photo shown below is a different part of a plant. Can you determine which is a root, stem, leaf, flower, fruit, and seed? Find the answer key on the next page. 2 Broccoli is… a flower! If you let broccoli keep growing past its peak harvest time, the florets (top part of the broccoli) will start to flower and eventually produce seeds. Photo source. Cabbage is… a leaf! A whole bunch of leaves, actually. They grow together in a tight ball. Once you start peeling away the layers you can see that each layer is a new leaf. Photo source. An apple is… a fruit! Fruits start developing from flowers after they have bloomed and been fertilized. Then, they make their debut! Photo source. Celery is… a stem! The part we eat is connected to the roots on the bottom, and the leaves on top. The stems are the main stalk of the plant. Photo source. 3 Corn kernels are… seeds! When we eat corn, those kernels are all individual seeds that can be planted into the soil to grow more corn. Photo source. A carrot is… a root! They grow underground and absorb nutrients from the soil. Photo source. Answer key simplified. Photo source. 4
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