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BIO NMDCAT Biological Importance of Water
nmdcat.online June 27, 2026

In the process of seed germination, the imbibition of water by the dry seed is primarily driven by the

A. High solute potential of the seed's stored starch
B. Matric potential, involving the adhesion of water to hydrophilic colloids in the seed
✓
C. Active transport of water molecules through aquaporins
D. Low atmospheric pressure created inside the seed coat

📝 Explanation

Imbibition is the physical adsorption of water onto the hydrophilic surfaces of macromolecules (proteins, polysaccharides) and cell walls inside the seed. This matric potential is an extremely negative component of water potential, creating a massive driving force for water uptake.

📖 Additional Information

  • High solute potential of the seed's stored starch
  • Matric potential, involving the adhesion of water to hydrophilic colloids in the seed
  • Active transport of water molecules through aquaporins
  • Low atmospheric pressure created inside the seed coat

Imbibition is the physical adsorption of water onto the hydrophilic surfaces of macromolecules (proteins, polysaccharides) and cell walls inside the seed. This matric potential is an extremely negative component of water potential, creating a massive driving force for water uptake.

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