Transpiration - Definition, Function and Examples - Biology …
2019年10月4日 · Transpiration is the evaporation of water from plants. Most of the water absorbed by the roots of a plant—as much as 99.5 percent—is not used for growth or metabolism; it is excess water, and it leaves the plant through transpiration.
Transpiration | Definition, Mechanism, & Facts | Britannica
2024年11月15日 · transpiration, in botany, a plant’s loss of water, mainly through the stomata of leaves. Stomatal openings are necessary to admit carbon dioxide to the leaf interior and to allow oxygen to escape during photosynthesis.
Transpiration - Wikipedia
Transpiration is the process of water movement through a plant and its evaporation from aerial parts, such as leaves, stems and flowers. It is a passive process that requires no energy expense by the plant. [1] Transpiration also cools plants, changes osmotic pressure of cells, and enables mass flow of mineral nutrients.
Transpiration | AQA A Level Biology Revision Notes 2015 - Save …
2024年11月5日 · The loss of water vapour from the leaves of plants (transpiration) results in a lower water potential in the leaves. This creates a concentration gradient between the roots and leaves and causes water to move upwards.
Transpiration in Plants-Types, Factors and Significance - BYJU'S
This process of elimination of excess water from the plant body is known as transpiration. It is generally the evaporation of water from the surface of the leaves. During the process of transpiration, water molecules in the plant tissues are removed from the aerial parts of the plants.
11.2: Transpiration - Biology LibreTexts
2024年11月26日 · Transpiration refers to the loss of water vapor through plant stomata, mainly in the leaves. Hot, dry, and windy conditions increase transpiration rate.
Transpiration - Types, Mechanism, Factors, Significance - Biology …
2024年11月4日 · Transpiration in plants occurs through several distinct pathways, each playing a specific role in water movement and evaporation. These pathways are classified into four primary types: stomatal, cuticular, lenticular, and bark transpiration.
16.2C: Transpiration - Biology LibreTexts
2022年5月15日 · Transpiration is the evaporation of water from plants. It occurs chiefly at the leaves while their stomata are open for the passage of CO 2 and O 2 during photosynthesis. But air that is not fully saturated with water vapor (100% relative humidity) will dry the surfaces of cells with which it comes in contact.
The Process of Transpiration | OCR A Level Biology Revision …
2022年1月22日 · Transpiration refers to the loss of water vapour from a plant to its environment by evaporation and diffusion ; Transpiration is a consequence of gaseous exchange at the stomata; The advantage of transpiration is that: It provides a means of cooling the plant via evaporative cooling; The transpiration stream is helpful in the uptake of mineral ions
Transpiration - Plant organisation - AQA - GCSE Biology (Single …
Plant cells, tissues and organs are adapted to their functions. The stem, root and leaves form an organ system that transports substances into, around and out of a plant. The plant tissue in a...