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Questions and Answers
What is the primary source of energy for photosynthesis?
What is the primary source of energy for photosynthesis?
- Water
- Glucose
- Carbon dioxide
- Light energy (correct)
What is the role of roots in plant structure?
What is the role of roots in plant structure?
- Absorb water and nutrients from soil (correct)
- Support leaves and transport materials
- Site of photosynthesis
- Reproductive structures
What is the name of the process by which plants convert light energy into chemical energy?
What is the name of the process by which plants convert light energy into chemical energy?
- Respiration
- Transpiration
- Fermentation
- Photosynthesis (correct)
Which branch of botany studies plant classification, nomenclature, and evolution?
Which branch of botany studies plant classification, nomenclature, and evolution?
What is the product of the light-dependent reactions in photosynthesis?
What is the product of the light-dependent reactions in photosynthesis?
Which part of a plant is responsible for supporting leaves and transporting materials?
Which part of a plant is responsible for supporting leaves and transporting materials?
What is the overall equation for photosynthesis?
What is the overall equation for photosynthesis?
What is the field of study that deals with the scientific study of plants?
What is the field of study that deals with the scientific study of plants?
What is the name of the group of plants that includes pine, spruce, and fir trees?
What is the name of the group of plants that includes pine, spruce, and fir trees?
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Study Notes
Photosynthesis
- Definition: The process by which plants, algae, and some bacteria convert light energy from the sun into chemical energy in the form of organic compounds (e.g., glucose)
- Overall equation: 6 CO2 + 6 H2O + light energy → C6H12O6 (glucose) + 6 O2
- Light-dependent reactions:
- Occur in thylakoid membranes of chloroplasts
- Light energy is absorbed by pigments (e.g., chlorophyll) and converted into ATP and NADPH
- Light-independent reactions (Calvin cycle):
- Occur in stroma of chloroplasts
- CO2 is fixed into glucose using ATP and NADPH produced in light-dependent reactions
- Importance: Provides energy and organic compounds for plants, supports life on Earth
Botany
- Definition: The scientific study of plants, including their structure, growth, evolution, classification, and distribution
- Branches of botany:
- Structural botany: Study of plant anatomy and morphology
- Systematic botany: Study of plant classification, nomenclature, and evolution
- Ecological botany: Study of plant interactions with environment and other organisms
- Plant structure:
- Roots: Absorb water and nutrients from soil
- Stems: Support leaves and transport materials
- Leaves: Site of photosynthesis
- Flowers: Reproductive structures
- Plant classification:
- Angiosperms (flowering plants): Most diverse group, includes crops and ornamental plants
- Gymnosperms (conifers): Includes pine, spruce, and fir trees
- Cryptogams (spore-producing plants): Includes ferns, mosses, and liverworts
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