Plants need water and mineral ions from the soil.
Plants need water and mineral ions from the soil.
Leaves produce organic compounds (sugars, amino acids) via photosynthesis.
These substances must be transported to all living cells for growth and metabolism.
Diffusion is too slow for large, multicellular plants, necessitating specialized transport systems.
Examiner Tip
When asked about transport needs, specify what is transported (water, minerals, organic compounds) and why (photosynthesis, respiration, growth, support).
Some plants, like giant sequoias, can transport water over 100 meters against gravity, showcasing the incredible efficiency of their vascular systems.
