Photosynthesis is the process in which plants produce food (glucose/starch). Photosynthesis also produces oxygen which we breath in. Photosynthesis has a word and chemical equation :
Word equation = Carbon dioxide + Water (Sunlight) + Glucose + Oxygen
Chemical equation = CO2 + H2O (Sunlight) + C6H12O6 + 6O2
What are substances required?
To start the process of photosynthesis, carbon dioxide. Humans breath out carbon dioxide which plants inhale through the stomata (located underneath the leaf). Water and minerals from the soil is brought to the roots.
What substances are formed from this process?
Through this process glucose is made. This glucose can be turned into starch which is found in potatoes, cereal, beans, bread, rice and even pasta. Another substance that comes from oxygen. The oxygen that plants produce is the same oxygen that we breath in along with other substances.
Structure and importance of a leaf
A leaf has 7 main parts. The lamina/blade, petiole, midrib, stomata, margin, tip and the veins.
Lamina - Used for the process of photosynthesis. The lamina/blade expands on the surface in which sunlight helps with photosynthesis.
Petiole - The petiole helps with the transportation of the ingredients for photosynthesis.
Midrib - The midrib is the center of the leaf and it helps to keep the leaf in a upright position. The midrib acts like a spine for the leaf.
Stomata - The stomata is a pore like part which allows substances like oxygen and carbon dioxide inside the leaf for photosynthesis.
Margin - The margin defines the leaf whether the leaf is a entire or toothed plus more.
Tip - There are many types of tips like a obtuse, acute, apiculate etc.
Veins - The main use of the veins is for transportation of food, water and minerals that circulate around the plant. The veins also help support the upright position of the leaf.
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