All flashcards
Flashcard 1: Identify the missing label in a photosynthesis model: Sunlight + CO2 + H2O → + O2.
Answer: Glucose (sugar). This completes the photosynthesis equation showing all products.
Flashcard 2: Which statement is correct: Plants get their food from soil or they make it using sunlight?
Answer: They make food using sunlight. Plants are producers that create their own food through photosynthesis.
Flashcard 3: Which option best completes this energy model: Sunlight energy → energy in glucose.
Answer: Chemical energy. Light energy converts to energy stored in glucose bonds.
Flashcard 4: What substance do plant roots absorb that is needed for photosynthesis?
Answer: Water (H2O). Roots absorb this liquid needed to build sugar during photosynthesis.
Flashcard 5: What is the main food molecule produced by photosynthesis that stores energy?
Answer: Glucose (sugar). This simple sugar molecule stores chemical energy from sunlight.
Flashcard 6: Which plant part is the main site of photosynthesis for most plants?
Answer: Leaves. Their large, flat surface and many chloroplasts maximize light capture.
Flashcard 7: What is the name of the tiny leaf openings that let CO2 enter and O2 leave?
Answer: Stomata. These pores open and close to control gas exchange.
Flashcard 8: Which plant tissue carries water from roots to leaves for photosynthesis?
Answer: Xylem. These tubes transport water upward from roots to leaves.
Flashcard 9: Which plant tissue carries sugars made in leaves to other parts of the plant?
Answer: Phloem. These tubes transport sugars from leaves throughout the plant.
Flashcard 10: What green pigment in plants absorbs most sunlight for photosynthesis?
Answer: Chlorophyll. This molecule gives plants their green color and captures light energy.
Flashcard 11: What forms of energy are involved when a plant makes food during photosynthesis?
Answer: Light energy is changed into chemical energy stored in sugar. Sunlight provides energy that gets stored in sugar molecules.
Flashcard 12: What simple model best represents energy storage in plants: light energy becomes what?
Answer: Chemical energy stored in sugar molecules. Light energy transforms into bonds holding sugar molecules together.
Flashcard 13: Identify the correct word: Photosynthesis stores energy in the plant as energy.
Answer: Chemical. Energy is stored in the bonds of sugar molecules.
Flashcard 14: What gas is released as a product of photosynthesis?
Answer: Oxygen (O2). This waste product is released through stomata during photosynthesis.
Flashcard 15: What is the function of chloroplasts in a plant?
Answer: They capture light energy to help make sugar (food). These organelles convert light energy into chemical energy in glucose.
Flashcard 16: Identify the correct cause in a model: If a plant gets no light, what happens to sugar production?
Answer: Sugar production decreases or stops. Without light energy, photosynthesis cannot occur.
Flashcard 17: Choose the correct model statement: Sugar is stored mainly in the leaf or in many plant parts?
Answer: In many plant parts (leaves, stems, roots, fruits, seeds). Plants transport and store sugar throughout their structures.
Flashcard 18: Identify the correct arrow direction in a leaf gas model: O2 (into leaf) or (out of leaf)?
Answer: O2 goes out of the leaf. Oxygen is a waste product that plants release during photosynthesis.
Flashcard 19: Identify the correct arrow direction in a leaf gas model: CO2 (into leaf) or (out of leaf)?
Answer: CO2 goes into the leaf. Plants need to take in carbon dioxide to build sugar molecules.
Flashcard 20: What is chlorophyll?
Answer: A green pigment that absorbs light energy. Found in chloroplasts, it captures sunlight to power photosynthesis.
Flashcard 21: What gas leaves a leaf through stomata as a product of photosynthesis?
Answer: Oxygen. This waste product is released when plants make sugar from CO2 and water.
Flashcard 22: What gas enters a leaf through stomata to help make sugar in photosynthesis?
Answer: Carbon dioxide. Plants absorb this gas from air to build sugar molecules.
Flashcard 23: In a basic photosynthesis model, which two substances are products (outputs)?
Answer: Glucose (sugar) and oxygen. Light energy transforms reactants into these energy-rich products.
Flashcard 24: In a basic photosynthesis model, which two materials are reactants (inputs)?
Answer: Carbon dioxide and water. These combine with light energy to form glucose and oxygen.
Flashcard 25: What main food molecule do plants make to store energy from sunlight?
Answer: Glucose (a sugar). This simple sugar stores chemical energy from sunlight in its bonds.
Flashcard 26: What energy source do plants use to start making food during photosynthesis?
Answer: Sunlight (light energy). Light energy powers the chemical reactions that build sugar molecules.
Flashcard 27: What is photosynthesis?
Answer: The process plants use to make sugar (food) using sunlight. Plants convert light energy into chemical energy stored in sugar molecules.
Flashcard 28: Which option best completes the model: Sunlight energy becomes energy in sugar.
Answer: Chemical. Light energy transforms into bond energy during photosynthesis.
Flashcard 29: What is chemical energy in the context of plant food?
Answer: Energy stored in the bonds of molecules like glucose. This potential energy can be released when bonds break.
Flashcard 30: What is the function of stomata in a leaf during photosynthesis?
Answer: They allow gas exchange (CO2 in, O2 out). These tiny pores open and close to control gas movement.