Free ebook on plant biology covering photosynthesis, respiration, xylem, phloem, stomata, hormones, and plant growth.
Free ebook content
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Plant Biology Basics: Structures That Power Photosynthesis and Growth
+ Exercise: Which statement best explains how the spongy mesophyll’s structure supports its function in a leaf?
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Photosynthesis in Plants: Capturing Light and Building Sugars
+ Exercise: A houseplant is in bright light but sugar production still seems slow. Based on the two-stage model of photosynthesis, which situation best explains why carbon fixation might be limited?
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Plant Respiration: Using Sugars to Power Cells Day and Night
+ Exercise: A healthy plant is placed in normal conditions. Which description best matches its net gas exchange at night, and why?
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Leaf Gas Exchange and Stomata: Balancing CO2 Intake with Water Loss
+ Exercise: In bright light, the air around a leaf is very dry and moving (windy). According to the decision-tree model, what stomatal response best balances CO2 intake with water loss risk?
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Water Transport in Plants: Xylem, Transpiration Pull, and Root Uptake
+ Exercise: Why does the Casparian strip in the endodermis help the plant selectively regulate what enters the xylem?
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Sugar Transport in Plants: Phloem, Source–Sink Relationships, and Storage
+ Exercise: According to the pressure-flow concept, what most directly drives the bulk movement of phloem sap from a mature leaf to a fruit?
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Plant Hormones and Signaling: Coordinating Growth and Environmental Responses
+ Exercise: A gardener pinches off the top growing tip of a plant to make it bushier. Which hormone-based explanation best matches this result?
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Plant Growth and Development: Meristems, Cell Expansion, and Tropisms
+ Exercise: A seedling placed near a window bends toward the light over several days. Which explanation best matches how this curvature is produced?
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Putting Plant Processes Together: Diagnosing Plant Health Using Photosynthesis and Transport Clues
+ Exercise: A plant droops at noon but the soil is moist, and it partially recovers by evening. Which primary diagnosis and first corrective action best match this pattern?
About the free ebook
Plant Biology Basics: Photosynthesis, Transport, and Growth
This free ebook introduces the connected systems that allow plants to capture energy, move materials, grow, and respond to their surroundings. Explore plant biology through clear explanations of the structures and processes behind everyday plant life.
Understand how plants make and use energy
Learn how chloroplasts capture light energy to build sugars through photosynthesis, and how cellular respiration releases usable energy from those sugars in plant cells. The ebook explains why these processes work together rather than compete.
Follow water, gases, and sugars through a plant
Discover how stomata manage carbon dioxide intake and water loss, how roots absorb water, and how xylem carries it upward through transpiration pull. See how phloem distributes sugars from producing tissues to growing and storing tissues.
Connect plant signals to growth
Examine how plant hormones, meristems, cell expansion, and tropisms coordinate development and environmental responses. These concepts help explain why shoots bend toward light, roots grow in particular directions, and plants adjust to changing conditions.
Use biological clues to assess plant health
Bring the ideas together by relating symptoms such as wilting, yellowing leaves, and reduced growth to possible issues with photosynthesis, gas exchange, water transport, sugar transport, or signaling.
What you will gain
- A practical foundation in plant structures and functions
- Clear distinctions between xylem and phloem
- An understanding of photosynthesis, respiration, and stomatal regulation
- A connected view of plant growth and plant health
Plant Biology Basics is a useful study resource for learners exploring core biology concepts and the processes that sustain plants.
What is the difference between xylem and phloem in plants?
Xylem mainly transports water and minerals from roots, while phloem moves sugars from source tissues to areas that use or store them.
How do stomata balance photosynthesis and water loss?
Stomata open to admit carbon dioxide for photosynthesis, but this also allows water vapor to leave; guard cells regulate their opening.
Why do plants respire when they already photosynthesize?
Photosynthesis makes sugars, while respiration breaks down sugars to provide usable energy for cells, including at night.
This ebook includes:
9 content chapters
Digital certificate of course completion (Free)
Exercises to train your knowledge
100% free, from content to certificate
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