Presentation on theme: "Photosynthesis 7.1.d Students know that chloroplasts capture sunlight energy for photosynthesis."— Presentation transcript:
1Photosynthesis7.1.d Students know that chloroplasts capture sunlight energy for photosynthesis.
2What can animals do that plants cannot? Learning objective: Today we will describe how the chloroplasts in plant cells capture sunlight energy in the process photosynthesis.Think about it.What can animals do that plants cannot?
3How do living things obtain energy? Nearly all living things obtain energy either directly or indirectly from the energy of sunlight captured during photosynthesis.
4What is an autotroph?An autotroph is an organism that makes its own food.EX. Plants
5What is a heterotroph?A heterotroph is an organism that cannot make its own food.EX. Animal
6What is photosynthesis? Photosynthesis is the process by which a cell captures energy in sunlight and uses it to make their own food
7What is Stage One of Photosynthesis? Stage 1: Capturing the sun’s energy with chloroplastsIt involves capturing the energy in sunlight.It occurs mostly in the leaves of plants, in the chloroplasts.
9What is chlorophyll?The main pigment in the chloroplasts that is responsible for photosynthesis is chlorophyll.Chlorophyll functions like a solar calculator.It captures energy from sunlight and uses it to power the second stage.
10What is Stage two of Photosynthesis? Stage 2:Using Energy to Make FoodThe cell uses the captured energy to produce sugars, called glucose.Two raw materials are needed to accomplish this- water and carbon dioxide.
11How does water get to the chloroplasts? The roots absorb water from the soil.The water then moves up through the plant’s stem to the leaves.
13How does the carbon dioxide get to the chloroplasts? Carbon Dioxide enters the plant through the small openings (called stomata) on the underside of the leaves.Once in the leaves, the water and carbon dioxide move into the chloroplasts.
14What happens in the chloroplasts? Inside the chloroplasts, the water and carbon dioxide undergo a complex series of chemical reactions.The reactions are powered by the energy captured from sunlight in stage 1 of photosynthesis.The products made from the chemical reaction are glucose(sugar) and oxygen.
16Closure 1. In your own words, what does photosynthesis mean? 2. How do plants obtain energy to power the process of photosynthesis?3. Which stage of photosynthesis requires light?4. What are the raw materials of photosynthesisa. CO2 and H b. C6H12O6 and O25. Why do we need plants to photosynthesize in order for us to survive?
17Photosynthesis Diagram Everyone must have a sketch of their diagramCreate a diagram of photosynthesisNeeds to be coloredNeeds a titleLabel all partsExplain what occurs during photosynthesis