Visual lesson 02

Root hairs & absorption

See where most short-lived absorbing surface develops and how root hairs increase contact with the surrounding solution and media.

Root SystemRoot-hair microscope diagram

Interactive physiology visual · review build

Root hairs & absorption

Water, dissolved ions, oxygen and root-surface exchange

Select a step to inspect the process

Knowledge check

Can you explain what the visual is showing?

Practice

Why are root hairs important?

Track this lesson

Mark the lesson complete when you are comfortable with the visual, observations, and system context.

Peer-reviewed review•Plant Physiology•2014

Root Hairs ↗

Foundational angiosperm root-hair development, absorptive surface, nutrient acquisition, environmental response, and root–microbe interaction.

Peer-reviewed research•Plants•2025

Genotypic Variation in Photosynthesis and Biomass Partitioning Underlies Agronomic Performance and Cannabinoid Profile in Cannabis sativa Under Drought ↗

Cannabis photosynthetic and stomatal responses to water deficit, genotype-dependent drought response, biomass partitioning, and physiological interpretation under measured conditions.

Peer-reviewed research•Physiology and Molecular Biology of Plants•2008

Photosynthetic response of Cannabis sativa L. to variations in photosynthetic photon flux densities, temperature and CO2 conditions ↗

Cannabis gas exchange, photosynthesis, transpiration, stomatal conductance, PPFD, temperature, and carbon-dioxide response under measured conditions.

System context

Connect this lesson to the whole plant

Root architecture, root-tip growth zones, lateral-root initiation, root hairs, rhizosphere exchange, radial water transport, aquaporins, oxygen availability, water and nutrient uptake, microbiomes, exudates, mycorrhizal interfaces, and root stress.

Open the full Root System interactive module