In this lesson, students investigate photosynthesis through hands-on experiments, videos, and discussion of text. They work in small groups with picture cards to create a chart showing how plants transform carbon dioxide, water, and light energy into carbohydrates and oxygen. After working collaboratively, students will create their own diagrams of photosynthesis. Because plant observations must occur over time, this lesson will take several days to complete.
We cannot fully study photosynthesis without knowing more about the structure of a leaf. The leaf is adapted to play a vital role in the process of photosynthesis.
Mosts green plants have leaves that are broad, flat and exposed to capture as much of the sun's energy (sunlight) needed for photosynthesis.
The network of veins in the leaf also carry water from the stems to the leaves. Glucose produced is also sent to the other parts of the plant from the leaves through the veins. Additionally, the veins support and hold the leaf flat to capture sunlight.
The stomata (tiny holes underneath the leaf) allows air in and out of the leaf. Stomata (single is called stoma) is usually at the bottom surface of the leaf but some plant species have them on the upper surface whiles other have them on both sides.
The stomata closes in the night to retain gases and moisture in the leaf cells, and opens during the day for gaseous exchange to continue.
Below is a close diagram of the leaf structure:
Take a good look at the diagram and the various parts of the leaf structure. It will be very useful on the next page.
Fun Photosynthesis Facts for Kids
Canister/FSB Filter Suggestion;
The simple diagram to the left is intended only as to set up a saltwater aquarium. This setup includes a Protein Skimmer and Fluidized Sand Bed Filter along with a level one UV Sterilizer for disease prevention and improving Redox Balance.
using live rock crumbles, or products such as SeaChem Matrix which is even more effective, in place of ceramic bio media, plastic bio balls, bio stars, or similar for de-nitrification as these other filter medium only provide aerobic bio filtration, thus creating high nitrates.
When live rock crumbles and/or Matrix are used this can avoid the nitrate factory aspect that these filters have been labeled with (often volcanic rock can be substituted, although not quite as effective, but very economical pound per pound).
The use of Purigen can further help with Nitrate & Phosphate Control. This filter can then often take the place of refugiums or similar when run with a Fluidized Sand Bed filter that is also running with nitrate removing NPX Bioplastics (see the next section for more).