AP BIOLOGY

Detailed explanation-1: -They discharge water in the form of water droplets at the margins of the leaves by the process of guttation.

Detailed explanation-2: -Hydathode is a plant organ responsible for guttation in vascular plants, i.e. the release of droplets at leaf margin or surface. Because this organ connects the plant vasculature to the external environment, it is also a known entry site for several vascular pathogens.

Detailed explanation-3: -The secretion of droplets of water from the pores of plants is called guttation. It takes place due to excess of water present in the soil during night time through leaves. The openings on leaves which allow excess water to exude in the form of water droplets are called hydathodes.

Detailed explanation-4: -Guttation usually occurs as a consequence of a combination of high root pressure (which may be caused by different factors) and a low evaporation rate/too high humidity. This often occurs just after sunrise when the plant becomes active and the humidity is high.

Detailed explanation-5: -Guttation is the loss of water in the liquid state from uninjured parts of plants, usually from tips and margins of leaves. In this, water exudes from the group of leaf cells called hydathodes. A hydathode is an opening or pores in the leaf epidermis, around, which are grouped as several thin-walled parenchyma cells.