Section 1
Plants Capture Sunlight to Produce Food
Through photosynthesis, plants transform carbon dioxide, water, and sunlight into sugars and oxygen. This process occurs in chloroplasts containing chlorophyll, primarily located in leaf cells.
In this Grade 7 Life Science lesson from Chapter 11, students explore plant diversity and the shared characteristics that define all plants, including their multicellular structure, cell walls, and role as producers. Students also learn how root systems and shoot systems work together to transport water, nutrients, and energy-rich compounds, and are introduced to key vocabulary including vascular system and transpiration.
Section 1
Plants Capture Sunlight to Produce Food
Through photosynthesis, plants transform carbon dioxide, water, and sunlight into sugars and oxygen. This process occurs in chloroplasts containing chlorophyll, primarily located in leaf cells.
Section 2
Vascular Systems Transport Materials Through Plants
Plants move water, nutrients, and energy through specialized tissues. Xylem carries water upward from roots, while phloem transports sugar-rich compounds from leaves to other plant parts.
Section 3
Leaves Balance Gas Exchange and Water Conservation
Stomata allow carbon dioxide in and oxygen out while the waxy cuticle prevents water loss. Plants control this balance through specialized adaptations, closing stomata when conditions are dry.
Section 4
Plants Organize Bodies into Specialized Systems
Root systems anchor plants and absorb water and nutrients. Above ground, shoot systems containing stems and leaves grow toward sunlight, supporting photosynthesis and transporting materials throughout the plant.
Section 5
Plants Adapt Structures to Different Environments
From cacti with spiny leaves to orchids growing on trees, plants modify their structures to survive in specific conditions. These adaptations help manage water conservation while obtaining necessary sunlight.
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Section 1
Plants Capture Sunlight to Produce Food
Through photosynthesis, plants transform carbon dioxide, water, and sunlight into sugars and oxygen. This process occurs in chloroplasts containing chlorophyll, primarily located in leaf cells.
Section 2
Vascular Systems Transport Materials Through Plants
Plants move water, nutrients, and energy through specialized tissues. Xylem carries water upward from roots, while phloem transports sugar-rich compounds from leaves to other plant parts.
Section 3
Leaves Balance Gas Exchange and Water Conservation
Stomata allow carbon dioxide in and oxygen out while the waxy cuticle prevents water loss. Plants control this balance through specialized adaptations, closing stomata when conditions are dry.
Section 4
Plants Organize Bodies into Specialized Systems
Root systems anchor plants and absorb water and nutrients. Above ground, shoot systems containing stems and leaves grow toward sunlight, supporting photosynthesis and transporting materials throughout the plant.
Section 5
Plants Adapt Structures to Different Environments
From cacti with spiny leaves to orchids growing on trees, plants modify their structures to survive in specific conditions. These adaptations help manage water conservation while obtaining necessary sunlight.
Book overview
Jump across lessons in the current chapter without opening the full course modal.
Continue this chapter