Which factor does not affect the rate of transpiration in plant presence of cuticle?
Some internal factors also affect rate of transpiration e.g., leaf area, leaf structure and age of plants. Chlorophyll content of leaves does not directly affect rate of transpiration.
Which is not correct about transpiration?
Excessive transpiration will lead to water stress, which is visible as wilting of leaves. Bleeding occurs due to the pressure of sap within the tissues that conduct water and sugars around the plant. Bleeding is not related to transpiration.
How many types of transpiration are there?
There are the following different types of transpiration in plants: Stomatal transpiration. Lenticular transpiration. Cuticular transpiration.
Which given statement is wrong with respect to root pressure?
So the correct answer is ‘Root pressure operates in all the plants’.
Which of the following is transpiration?
Transpiration is the process of loss of excess water in the form of water vapour from aerial parts of plants, especially from leaves but also from stems and flowers.
Which type of transpiration is most common?
Stomatal Transpiration
What is the main function of transpiration?
The water, warmed by the sun, turns into vapor (evaporates), and passes out through thousands of tiny pores (stomata) mostly on the underside of the leaf surface. This is transpiration. It has two main functions: cooling the plant and pumping water and minerals to the leaves for photosynthesis.
What is the function of transpiration Class 10?
Transpiration is said to provide the energy to transport water in the plant and may aid in heat dissipation in direct sunlight. Transpiration helps plants to supply water from roots to top parts of plants thereby distributing water to all parts of the plant.
What are the uses of transpiration?
Mention 4 uses of transpiration.
- Transpiration helps plants in lowering their body temperature.
- Transpiration helps plants in pulling water up from the soil through roots.
- Transpiration helps in bringing minerals from the roots for biosynthesis.
What is transpiration caused by?
Transpiration is the loss of water from the plant through evaporation at the leaf surface. Transpiration is caused by the evaporation of water at the leaf–atmosphere interface; it creates negative pressure (tension) equivalent to –2 MPa at the leaf surface.
Does transpiration need sunlight?
Light intensity: The transpiration rate is increased due to the increase in light intensity. During daytime in the sunlight, the rate of transpiration is faster. This is because the stomata remains open to allow the inward diffusion of carbon dioxide for photosynthesis.
Can transpiration be stopped?
The cohesion forces between the water molecules help in maintaining a continuous water column and the adhesion forces between water molecules and the tracheary elements help in sticking to water to the xylary elements. Hence, if transpiration stops upward movement of water from roots will stop.
What is difference between transpiration and evaporation?
In both the process, water is evaporated from the surface to the atmosphere in the form of a gaseous water vapour….Difference between Transpiration and Evaporation.
| Transpiration | Evaporation |
|---|---|
| Transpiration makes the surface of leaves and young stems wet and protects them from sunburn. | Evaporation provides dryness to the free surface. |
What does both evaporation and transpiration create?
Evapotranspiration is the sum of evaporation from the land surface plus transpiration from plants. The water eventually is released to the atmosphere as vapor via the plant’s stomata — tiny, closeable, pore-like structures on the surfaces of leaves.
What is difference between transpiration and translocation?
Transpiration is a biological process in which the water molecules are lost in the form of water vapours from the aerial parts of the plants Whereas translocation is also a biological mechanism involving the transfer of water and other soluble nutrients from one part of the plant to another through the xylem and phloem …
Is transpiration active or passive?
Transpiration—the loss of water vapor to the atmosphere through stomata—is a passive process, meaning that metabolic energy in the form of ATP is not required for water movement. The energy driving transpiration is the difference in energy between the water in the soil and the water in the atmosphere.
What is the difference between transpiration and transportation?
Transportation is a life process where substances synthesized or absorbed in one part of the body and carried to other parts of the body. Transpiration is the process of loss of water from the plant.