Photosynthesis and Cellular Respiration Scavenger Hunt and other resources Here s how to play! Laminate and cut out the fact cards. Hide the fact cards around the classroom in creative hiding places. (You may choose to make multiple copies of the fact cards to help the game move faster and to keep from having a traffic jam at the fact cards.) Give each student, pair, or group of students a question sheet. Instruct students to find the fact card for each question, read the information, and then write the answer to the question on their paper. To help review terms from the hunt, vocabulary and definition cards have been included, as well as a double bubble map which can be used as notes or as review.
Fact Card #1 All living things are made up of tiny parts called cells. Plant cells and animal cells are similar, but there are a few differences. Plant cells have an organelle (tiny organ in a cell) called a chloroplast. Inside the chloroplast is where photosynthesis takes place. Photosynthesis is the process plants use to make their own food. Fact Card #3 The epidermis is the outside, or skin, of a leaf. The epidermis is where the stoma and guard cells are located. The guard cells help control when the stoma open, which helps control water loss because water exits the plant through the stoma. The epidermis itself also aids in controlling water loss in the plant. It is covered in a waxy material called the cuticle that helps keep water inside the plant. Humans also have a cuticle on their bodies. BONUS: Name where the cuticle is located on humans. Fact Card #2 Stoma (stomata, plural) are tiny openings, or pores, found on the outside of the leaf. They are surrounded by a pair of cells called guard cells. The guard cells control the size of the opening of the stomata. The stoma have several purposes. First, they breathe in carbon dioxide from the air. Oxygen is produced during photosynthesis, and this is also released through the stoma. Finally, water is produced as a result of cellular respiration, which is released through the stoma. Fact Card #4 Have you ever breathed onto glass or a mirror? You ve probably noticed a fog, or droplets of water, on the glass after you breathed on it. This is because of respiration. When you breathe out, you are breathing out carbon dioxide and a little bit of water vapor. Plants have a similar process called transpiration. In transpiration, plants breathe out water vapor. Plants also breathe out oxygen as a result of photosynthesis. Fact Card #5 What makes the leaves on plants look green? It s chlorophyll! The word chlorophyll actually is made of two Greek words, and it literally means green leaf. Chlorophyll is a green pigment (or colored dye). It is found in the chloroplast (a tiny part of a plant cell). There is one main job that chlorophyll performs. Energy from light is needed to help plants make food. Chlorophyll absorbs light energy. Because it is green, it absorbs all of the colors of the light spectrum except green. Blue and red are absorbed most strongly by chlorophyll. Red light has the most energy, so it is very helpful that chlorophyll absorbs it so well. Fact Card #7 Photosynthesis is the process plants use to make their own food. There are several ingredients needed for photosynthesis to take place. Carbon dioxide taken in through the stomata is one necessary ingredient. Water taken in through the roots of the plant is also needed. Finally, light energy absorbed by the chlorophyll completes the needed ingredients. Fact Card #6 In the fall, daylight hours decrease and the temperatures get lower. This causes a change in deciduous trees. Deciduous trees are trees that lose their leaves in the winter. This change in daylight and temperature causes the amount of chlorophyll to decrease. Each leaf contains another pigment, usually yellow, orange, or red. These pigments are not seen during the spring and summer because chlorophyll covers them. When the chlorophyll decreases, the other pigments are able to be seen. This is why we see beautiful fall colors each autumn season. Fact Card #8 Cellular Respiration is the process all living things use to break down food into energy they can use. This process is kind of the opposite of photosynthesis. The products, or results, of photosynthesis are the ingredients for cellular respiration. Oxygen and glucose go through a chemical process that helps break down the glucose into a form of energy that plants and animals can use.
Fact Card #9 Ingredients are combined during photosynthesis to make food for the plant. Two things are produced as a result of photosynthesis. The first product of photosynthesis is a sugar called glucose. Glucose will be used as food for the plant. The second product of photosynthesis is oxygen. Some of the oxygen will be used to help break down the glucose into energy for the plant. The rest of the oxygen will be released through the stoma into the air. Animals and humans will then breathe in this oxygen from the plants. Fact Card #10 In cellular respiration, the products of photosynthesis go through a chemical process that breaks the glucose down into energy (ATP) that can be used by the plant. The glucose cannot be used by the plant until it is transformed into ATP. The products of cellular respiration are water, carbon dioxide, and energy. Some of the water can be recycled within the plant and used as an ingredient in photosynthesis. The rest of the water is released through transpiration. The carbon dioxide can also be recycled within the plant as an ingredient in photosynthesis. The energy (ATP) is used by the
Photosynthesis & Cellular Respiration Scavenger Hunt FACT CARD #1-Where does photosynthesis take place? FACT CARD #2-What is the function of the stoma? FACT CARD #3-How is water loss prevented in plant leaves? FACT CARD #4-How is transpiration in plants similar to respiration in animals? FACT CARD #5-What is the importance of chlorophyll in photosynthesis? FACT CARD #6-Why do leaves change colors in the fall? FACT CARD #7-What ingredients are needed for photosynthesis to occur? FACT CARD #8-What ingredients are needed for cellular respiration to occur? FACT CARD #9-Why is photosynthesis important to animals and humans? FACT CARD #10-Why is cellular respiration necessary in plants?
Answer Key FACT CARD #1-Where does photosynthesis take place? Inside the chloroplast is where photosynthesis takes place. (REMEMBERING) FACT CARD #2-What is the function of the stoma? They breathe in carbon dioxide from the air as an ingredient for photosynthesis, and release oxygen and water as products of cellular respiration. (ANALYZING) FACT CARD #3-How is water loss prevented in plant leaves? The guard cells help control when the stoma open, which helps control water loss because water exits the plant through the stoma. The epidermis also aids in controlling water loss in the plant. (REMEMBERING) FACT CARD #4-How is transpiration in plants similar to respiration in animals? They are similar because in each process water vapor is breathed out. (EVALUATING) FACT CARD #5-What is the importance of chlorophyll in photosynthesis? Energy from light is needed to help plants make food and chlorophyll absorbs the needed light energy. (EVALUATING) FACT CARD #6-Why do leaves change colors in the fall? Chlorophyll decreases with lower temperatures and decreased daylight hours. The other pigments in the leaf are able to be seen when the chlorophyll decreases. (REMEMBERING) FACT CARD #7-What ingredients are needed for photosynthesis to occur? Carbon dioxide, water, and light energy are needed for photosynthesis to occur. (REMEMBERING) FACT CARD #8-What ingredients are needed for cellular respiration to occur? The ingredients needed for cellular respiration are oxygen and glucose. (REMEMBERING) FACT CARD #9-Why is photosynthesis important to animals and humans? Photosynthesis is important to animals and humans because it produces oxygen, which plants release for humans and animals to breathe. (EVALUATING) FACT CARD #10-Why is cellular respiration necessary in plants? Cellular respiration is necessary because glucose can not be used by the plant until it broken down into a form of energy that can be used by the plants, ATP. (EVALUATING)
PHOTOSYNTHESIS CELLULAR RESPIRATION
Possible Responses for Double Bubble Map Photosynthesis Both Cellular Respiration Energy from the sun is stored in chloroplasts Occurs only in the presence of chlorophyll Goes on only in plants (mostly, check out the Elsyia Chlorotica sea slug and new research on aphids) Carbon dioxide is taken in through the stoma Food is made Produces glucose and oxygen Oxygen released through stoma Both contribute to the oxygen and carbon dioxide cycles. Both are beneficial to both plants and animals (without photosynthesis there would be no plants, and animals eat plants). The ingredients of one process are the products of the other. Energy (glucose) from photosynthesis is released Occurs when glucose is made or taken in Goes on in plants and animals Oxygen and glucose are taken in Food is broken down Produces carbon dioxide water and energy (ATP) In plants, carbon dioxide and water is reused by the plant for photosynthesis, and some water vapor is released through the stoma
PHOTOSYNTHESIS the process plants use to make food by combining water, carbon dioxide, and sunlight energy to make glucose and water CELLULAR RESPIRATION The process plants and animals use to break down food into energy that can be used by the plant or animal s cells to help them live CHLOROPLAST an organelle found only in plant cells that produces chlorophyll, an ingredient needed for photosynthesis CHLOROPHYLL a green pigment (dye) found in green plants; chlorophyll absorbs and stores energy from the sun, then uses the energy to help the plant make food GLUCOSE a sugar produced for food by green plants ATP a chemical that carries energy to the cells of all living things
STOMA/STOMATA holes found mostly on the bottom of leaves that open and close to let in carbon dioxide, and release water vapor and oxygen TRANSPIRATION the process of plants releasing or breathing water vapor into the atmosphere EPIDERMIS the skin, or covering on the leaf of a plant CUTICLE a thin, waxy covering on the leaves of plants; it helps stop water loss GUARD CELLS cells that surround the opening of the stoma; they open and close to control the amount of water vapor released, and to let in carbon dioxide and release oxygen
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