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Photosynthesis & Respiration. Energy for Plants & Animals. Essential Standards. 6.L. 1 Understand the structures , processes and behaviors of plants that enable them to survive and reproduce. Clarifying Objectives. - PowerPoint PPT Presentation
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Photosynthesis & Respiration
Energy for Plants & Animals
Essential Standards
• 6.L.1 Understand the structures, processes and behaviors of plants that enable them to survive and reproduce.
Clarifying Objectives
• 6.L.1.2 Explain the significance of the processes of photosynthesis, respiration, and transpiration to the survival of green plants and other organisms.
Essential Question
• How do Photosynthesis, Respiration & Transpiration relate when discussing plants & other organisms?
• What is the process of photosynthesis?
• What is the process of respiration?
• What is the process of transpiration?
Animals vs. Plants• Animals cannot make their own
food and survive on their own
• Animals either have to eat plants or other animals to survive
• Plants CAN make their own food
• This is why PLANTS are the beginning of the FOOD CHAIN
Sun’s Energy• All energy comes from the sun
either directly or indirectly
• Energy comes from the sun directly to plants as they use the sunlight in photosynthesis
• Energy comes from the sun indirectly to animals through eating plants (that got their energy from the sun) or other animals
Photosynthesis• Plants food making process
• Photosynthesis is a chemical reaction where ENERGY from light (sun) is changed to CHEMICAL ENERGY which plants can use
• The converted chemical energy is turned into sugar which is called glucose
Light, Water, Carbon Dioxide
• All plants need three things to grow– Light (sun)– Water (rain)– Carbon Dioxide
(Atmosphere)
Chloroplasts & Chlorophyll• Photosynthesis takes place in
a tiny piece of the plant called the Chloroplast
• Chloroplasts have Chlorophyll in them
• This is what gives the leaves of the plants their green color
• Chloroplasts are located in the leaves of the plants
Sunlight
① Sun shines down onto a plant
② The sunlight shines onto the leaves of the plant which is where the Chloroplasts are
③ The Chlorophyll in the leaves trap the sunlight to make sugar
Carbon Dioxide & Water
④ Next the plant takes in Carbon Dioxide through the Stomata in the leaves
⑤ Next the Water is taken from the ground through the plant’s root system
Water + Carbon Dioxide + Sunlight
⑥ The water from the roots combine with the Carbon from the atmosphere and the sunlight from the sun to make GLUCOSE (sugar energy)
⑦ The plant then stores the glucose in the stem & flower of the plants
Plant Waste = Oxygen
⑧ When these three combine they don’t use everything and some of it is turned to waste and given off back into the atmosphere. This waste is called Oxygen
Photosynthesis Video
• http://www.youtube.com/watch?v=JUmT24R8CyA
• 4:03-5:00
Essential Question
• Get with a partner and answer…
• What is the process of photosynthesis?
Respiration• Respiration is another
chemical reaction that works with photosynthesis
• It is the opposite of photosynthesis
• It released energy to organisms and its waste is Carbon Dioxide
Animals Eat & Breathe
① Animals eat a plant or another animal and get glucose from that plant or animal they ate
② Animals breathe in the oxygen that the plant gave out as waste
Mitochondria goes to Work③ The glucose (sugar) (carbs)
and the oxygen travel to the Mitochondria which is part of each animal cell
④ Mitochondria breaks down the oxygen & glucose (carbs) and releases water vapor & carbon Dioxide into the air
⑤ At the same time it releases energy into the cell
Respiration Video
• http://www.youtube.com/watch?v=JUmT24R8CyA
• 6:15-8:52
Essential Question
• Get with a partner and answer…
• What is the process of Respiration?
Transpiration• Transpiration is when plant
leaves open their cells to take in carbon dioxide and lose water to evaporation– Stomata & guard cells open– Water Evaporates– Carbon Dioxide enters the
plant
• Transpiration is important because it moves the water throughout the plant
Opening the Stomata① Plant opens the Stomata of
the leaf to let water vapor out & Carbon Dioxide in
② The plant immediately wants to replace the water it lost through the stomata
③ Transpiration makes the roots suck more water from the ground
Moving through the Plant
④ Transpiration bonds the water molecules together & the Xylem sucks the water up through the stem & all the way to the flower (working against gravity)
Essential Question
• Get with a partner and answer…
• What is the process of Transpiration?
How do they Relate• Photosynthesis & Respiration use each
other to continue their process
• In order to complete Photosynthesis the plant must have Carbon Dioxide which they can only get from animal respiration
• In order to complete Respiration the animal must have Oxygen which it gets from the plant when the plant goes through photosynthesis
• In order for Transpiration to occur the plant must take in carbon dioxide from respiration
Essential Question
• Get with a partner and answer…
• How do Photosynthesis, Respiration & Transpiration relate when discussing plants & other organisms?
EOG Questions
• Leaves perform many tasks and are important to the survival of plants.
• How is transpiration controlled in the leaves of a plant?
• Explain why transpiration is important to the survival of the plant.
Important Points• Plants are the beginning
of the FOOD CHAIN
• Photosynthesis & Respiration work together & relate to each other
• Photosynthesis combines Carbon+Water+Sunlight to give the plant energy
• Respiration breaks down glucose + Oxygen and releases energy in the process
• Photosynthesis takes place in the Chloroplasts which is inside the plant cells
• Respiration takes place in the Mitochondria which is inside the animal cells