If there is no answer from students, teachers can also ask students to write their answer on a piece of paper and put them in a box. Teacher will then write some response on a board or a chart paper for discussion.
You may re-voice their explanations and write their response on a board. Does anybody want to share why they chose option C? What is your evidence for saying that? Teacher will first conduct the Activity 1 — An Oxygen Factory. Afterward, teachers can choose one of the option activities i. Details and procedures of each activity are explained as follow: Activity 1: An Oxygen Factory Part 1: Preparation: Teacher will have two different demo stations i.
Both teachers and students can create the demo stations. Make sure that the aquatic plants are submerged in water. Label the terrarium. Note: If you do not have access to oxygen gas, just seal the terrarium. Make sure the plant had been in a closed system at least for 3 days.
Note: If you do not have access to carbon dioxide gas, place alkalizer in water, in an erlenmyer flask with a one-hole stopper, an elbow tube and glass tubing. Insert the tubing into the lid of the terrarium as the carbon dioxide is being produced. Leave the plant in an unsealed terrarium. Part 2: Observation: Students observe the plants at the two demo stations i. For example, for the Demo Station 1, teacher can ask the follow questions: What do you think is being produced in the flask? What is the evidence for this: Oxygen is being produced.
The flask is foggy Inside. Where do you think the bubble comes from in the second terrarium? What gas do you think the bubbles are? Herbavores such as deer and cows eat the plants. Lions, humans and other carnivores in turn eat the herbavores. In fact any food chain traced back to its original source will always begin with a plant. Without plants and their ability to make their own food through a process called photosynthesis, life would cease to exist. So what exactly is photosynthesis?
And why are other life forms dependent on it for survival? Plants as well as all other organisms are dependent on glucose for energy. Chlorophyll — a molecule that gives the plant its green color- has an atom of the metal maganese at the center surrounded by a complex ring made of carbon and hydrogen with a long tail — giving it a kite-like appearance.
Understanding How Photosynthesis Works Photosynthesis starts when a photon — a tiny packet of light- is absorbed by a molecule of chlorophyll. How do plants capture sunlight? Plants capture sunlight using a compound called chlorophyll. Chlorophyll is green, which is why so many plants appear green. You might think at first that it's green because it wants to absorb and use green light. However, from our study of light , we know that the color we see is actually the color of light that is reflected.
So chlorophyll actually reflects green light and absorbs blue and red light. More details on Photosynthesis Inside a plant's cells are structures called chloroplasts. It's in these structures where the chlorophyll resides. There are two main phases to the process of photosynthesis. In the first phase, sunlight is captured by the chloroplasts and the energy is stored in a chemical called ATP.
In the second phase, the ATP is used to create sugar and organic compounds.Learning about the needs of plants can help you learn where to plant them in your yard and how best to water them so they will flourish. Plants as well as all other organisms are dependent on glucose for energy. Of course, you will need to know the steps and names of the intermediate parts of the cycle, but as I said before, that will be much easier once you feel very comfortable with the general process. Understanding How Photosynthesis Works Photosynthesis starts when a photon — a tiny packet of light- is absorbed by a molecule of chlorophyll. Teacher will first conduct the Activity 1 - An organelle in the plant cells that can do through. What do you think the bubbles are made of. It seems sort of strange doesn't it.
However, there is so much information, so much detail, and so many terms, reactions, and steps, that students often lose track of the big overall picture.
Photosynthesis goes through two stages.
The sugar molecules are the result of a chemical reaction. Summary Now we know that plants need sunlight, water, and carbon dioxide to live. When plants breathe carbon dioxide in, they breathe out oxygen. Activity Option 2 — Light! Where does the food that a plant needs come from?