Tag: botany

Guttation is the loss of water in solution form through hydathodes. It occurs under the influence of root pressure. When transpiration is low and plant absorbs water from well-watered soil under the influence of root pressure. The excess water oozes out as a dilute solution of minerals and other solutes from dead endings of veins. Thus, the correct answer is option B.

Guttation is defined as loss of water in liquid form through water stomata or hydathodes. The water is lost as a dilute solution of mineral salts. Guttation occurs under the influence of positive root pressure.

Guttation is the loss of water in liquid form as a dilute solution from uninjured leaf tips. The uninjured leaf tips have hydathodes or water stomata. Under conditions of low transpiration dilute solution of minerals oozes out through them under the influence of increased root pressure. Thus, mostly guttation is observed during night time when transpiration is low, for example, due to high atmospheric humidity and sufficient water is present in soil. The most important force responsible for guttation is positive root pressure.

Guttation is the loss of water in the form of the dilute solution which consists salts and minerals through stomata or hydathodes. Guttation occurs under the influence of root pressure when soil is well watered but humidity is high consequently transpiration is less.

Loss of water as dilute solution of minerals and salts from hydathodes is called as guttation. It is prominently seen when transpiration is low but root pressure is high. When water evaporates, the mineral salts are left behind as whitish deposits.

The movements showed by plants can be classified broadly as
(1) Hygroscopic- due to loss or gain of water and
(2) Vital- due to irritability of the cytoplasm. 
Nyctinasty or sleep movements are rhythmic movements, also called as sleep movements and are caused by relative changes in cell size on the opposite sides of the leaf base called as pulvinus. 

Guttation is the loss of water through water stomata (hydathodes) in solution form as a dilute solution of mineral salts. This process occurs, when the absorption of water exceeds transpiration i.e., when plants are absorbing water actively. A positive root pressure is built up under the influence of which excess water simply oozes out through the dead ends of xylem tracheids and vessels. Thus, the correct answer is option D.

Guttation is the loss of water through water stomata (hydathodes) in solution form as a dilute solution of mineral salts. When the absorption of water exceeds transpiration i.e., when plants are absorbing actively, a positive root pressure is built up under the influence of which excess water simply oozes out through the dead ends of xylem tracheids and vessels. A loose collection of cells called as epithem, present at the dead ends of xylem tracheids and vessels. The epithem cells do not regulate opening and closing of hydathodes. Thus, hydathodes are unregulated openings and are always open. Thus, the correct answer is option D.

Guttation is the loss of water through water stomata (hydathodes) in solution form as a dilute solution of mineral salts. The term was coined by Burgerstein in 1887. When the absorption of water exceeds transpiration i.e., when plants are absorbing actively, a positive root pressure is built up under the influence of which excess water simply oozes out through the dead ends of xylem tracheids and vessels. Thus, the correct answer is option A.

Guttation is the loss of water in solution form through hydathodes. The water lost in guttation is a dilute solution of mineral salts. The guttation occurs under the influence of positive root pressure and depends on environmental conditions. It is generally observed when atmospheric humidity is high so that rate of transpiration is low and soil is well watered. Thus, the correct answer is option B.