A
Embryonic zone
B
Zone of elongation
C
Root hairs
D
Growing point
While plants can absorb water through their leaves, it is not a very efficient way for plants to take up water. If water condenses on the leaf during high humidity, such as fog, then plants can take in some of that surface water. The bulk of water uptake by most plants is via the roots.
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A
Auxin
B
Gibberellins
C
Ethylene
D
Cytokinins
Indole-3-acetic acid (IAA) is the most common plant hormone of the auxin class and it regulates various aspects of plant growth and development. Thus, the terms “auxin” and “IAA” are occasionally used interchangeably.
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A
Adhesion
B
Cohesion
C
Imbibition
D
Guttation
Guttation is the exudation of drops of xylem sap on the tips or edges of leaves of some vascular plants, such as grasses, and a number of fungi. Guttation is not to be confused with dew, which condenses from the atmosphere onto the plant surface.
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