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

A consequence of water’s strong adhesive property to cellulose is the generation of a

A. Concave meniscus in a glass tube and capillary rise
✓
B. Convex meniscus and capillary depression
C. High vapor pressure deficit in the soil
D. Decrease in the cohesive forces within the water column

📝 Explanation

Water adheres to the polar -OH groups of cellulose/glass. This adhesion pulls water up the sides, creating a concave meniscus and generating the upward force for capillary action. If cohesion were dominant (like mercury), a convex meniscus and depression would result.

📖 Additional Information

  • Concave meniscus in a glass tube and capillary rise
  • Convex meniscus and capillary depression
  • High vapor pressure deficit in the soil
  • Decrease in the cohesive forces within the water column

Water adheres to the polar -OH groups of cellulose/glass. This adhesion pulls water up the sides, creating a concave meniscus and generating the upward force for capillary action. If cohesion were dominant (like mercury), a convex meniscus and depression would result.

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