✅ Plant Physiology

How this section is organized

Where Plant Anatomy covers structure (tissue types, organ arrangement, monocot/dicot contrasts), Plant Physiology covers mechanism: what actually pulls water to the top of a tree, what happens biochemically inside a chloroplast, what tells a seed to germinate or a flower to form on schedule. This section runs in four tiers:

• Water & Nutrient Transport (4 pages): the transport mechanisms Plant Anatomy’s vascular, root, and leaf pages explicitly deferred, covering water movement, stomatal control, phloem translocation, and mineral/symbiotic nutrient uptake.
• Photosynthesis (2 pages), covering the light-reaction and carbon-fixation biochemistry behind the Kranz and CAM anatomy already covered structurally in Plant Anatomy.
• Growth Regulation & Development (4 pages), the hormonal signals and their downstream effects on directional growth, flowering timing, and germination.
• Whole-Plant & Stress Physiology (1 page), abiotic and biotic stress responses, integrating mechanisms from every earlier tier.

Start with Water Transport & Transpiration: its water potential framework is assumed throughout the rest of the section.

Water & Nutrient Transport

Photosynthesis

Growth Regulation & Development

Whole-Plant & Stress Physiology