How does leaf affect the rate of transpiration?

How does leaf affect the rate of transpiration?

More leaves (or spines, or other photosynthesizing organs) means a bigger surface area and more stomata for gaseous exchange. This will result in greater water loss. More stomata will provide more pores for transpiration. A leaf with a bigger surface area will transpire faster than a leaf with a smaller surface area.

How does the type of plant affect transpiration?

Wind and air movement: Increased movement of the air around a plant will result in a higher transpiration rate. Type of plant: Plants transpire water at different rates. Some plants which grow in arid regions, such as cacti and succulents, conserve precious water by transpiring less water than other plants.

What are the factors that affect transpiration?

Factors affecting transpiration

• temperature.
• humidity.
• air movement.
• light intensity.

Why do different plants transpire at different rates?

The metabolic rate of the plant = plants with a higher metabolism have a higher transpiration rate. The amount of water in the soil – plants that have access to more soil water will transpire at a higher rate than those which don’t.

Which leaf will have a higher rate of transpiration?

From the above paragraphs we can conclude that the rate of transpiration is more on the lower surface of the leaf than the upper surface. This is due to the presence of more stomata on the lower surface than the upper surface.

What 4 factors affect the rate of transpiration?

The rate of transpiration is affected by several factors, including:

• temperature.
• humidity.
• wind speed.
• light intensity.

How do plants increase transpiration?

Plants transpire more rapidly in the light than in the dark. This is largely because light stimulates the opening of the stomata (mechanism). Light also speeds up transpiration by warming the leaf. Plants transpire more rapidly at higher temperatures because water evaporates more rapidly as the temperature rises.

Is the leaf surface area directly related to the rate of transpiration?

The rate of transpiration is measured as the amount of water lost/ square meter/ minute. Because water evaporates through the many stomata on the leaf surface, the rate of transpiration is directly related to the surface area. Estimate the area of the partial squares.

Why do leaves of different plants lose water at different rates?

If the rate of transpiration increases, the rate of absorption of water by the root increases too. Factors that affect the rate of transpiration also affect water uptake by the plant….Factors affecting rate.

Factor	Effect	Explanation
Temperature	Increased	Evaporation and diffusion are faster at higher temperatures

Which type of leaf you will use to study comparative rates of transpiration and why?

Answer: Compound leaf because this types of leaves are dotted with some pores called stomata .

Are leaves reduced to spines in Xerophytic plants?

➡️✨✨In case of cactus or xerophytic plants, leaves are redued to spines to prevent loss of water through transpiration and stem performs the process of photosynthesis.

Which of these increases the rate of transpiration in leaves?

Factors affecting rate

Factor	Effect	Explanation
Wind speed	Increased	Moving air removes water vapour, increasing the rate of diffusion of water vapour from the leaf
Light intensity	Increased	The stomata open wider to allow more carbon dioxide into the leaf for photosynthesis

How does the size of a leaf affect transpiration?

Boundary layers increase as leaf size increases, reducing rates of transpiration as well. For example, plants from desert climates often have small leaves so that their small boundary layers will help cool the leaf with higher rates of transpiration.

What happens to transpiration rates when stomata are open?

When stomata are open, The loss of water as vapor from plants at their surfaces, primarily through stomata. rates increase; when they are closed, transpiration rates decrease. A region of still air near the surface of a leaf through which water must diffuse en route to the atmosphere.

How does pubescence affect the rate of transpiration?

Leaves that possess many hairs or pubescence will have larger boundary layers; the hairs serve as mini-wind breaks by increasing the layer of still air around the leaf surface and slowing transpiration rates. Some plants possess stomata that are sunken into the leaf surface, dramatically increasing the boundary layer and slowing transpiration.

How does the cuticle help a plant transpiration?

For example, plants from desert climates often have small leaves so that their small boundary layers will help cool the leaf with higher rates of transpiration. Cuticle – The cuticle is the waxy layer present on all above-ground tissue of a plant and serves as a barrier to water movement out of a leaf.