Table of Contents
What is transpiration questions and answers?
Ans. Transpiration is the process by which water as water vapours is lost through internal tissue from the aerial parts of the plant especially the leaves.
What is transpiration science question?
Explanation: Transpiration is the loss of water in the form of vapour, from stomata. It takes place by generating a pulling force responsible for the ascent of sap, and minerals dissolved in water enter the plant body due to water replacing the subsequent gaps created due to evaporation.
What are the 4 factors that affect transpiration?
The rate of transpiration is affected by several factors, including:
- temperature.
- humidity.
- wind speed.
- light intensity.
Which leaf dries last?
Leaf A will dry last because is covered by the grease on both the sides. Grease blocks the stomatal pores, hence, do not show shrinking.
What is transpiration Class 6 short answer?
Answer: Transpiration is the process of losing water from the surface of the leaf through stomata. Transpiration helps a plant in cooling the leaves and transporting the nutrients.
What is transpiration 6th grade?
The process by which plants remove excess water through stomata present on the surface of leaves is called ‘transpiration’. Transpiration is essentially evaporation of water from leaves of the plant. Chemistry.
Why do leaves lose water?
Most of the water a plant loses is lost due to a natural process called transpiration. Plants have little pores (holes or openings) on the underside of their leaves, called stomata. Plants will absorb water through their roots and release water as vapor into the air through these stomata.
Why does wind affect transpiration?
Wind – Wind can alter rates of transpiration by removing the boundary layer, that still layer of water vapor hugging the surface of leaves. Wind increases the movement of water from the leaf surface when it reduces the boundary layer, because the path for water to reach the atmosphere is shorter.
How does light affect transpiration?
The rate of transpiration is regulated by the opening of the stomata. In general, light stimulates the opening of stomata and during daylight, stomata remain open to allow diffusion of CO2 to carry out photosynthesis so the rate of transpiration is also fast.
How does water vapour escape stomata?
As the sun warms the water inside the plants leaves, transpiration occurs. This warming causes most of the water to turn into vapor and evaporate. The water vapor escapes into the air through the stomata. The water vapor absorbs heat as it escapes, which cools the inside of the leaves.
What make the Colour of leaves green?
The Splendor of Autumn This food-making process takes place in the leaf in numerous cells containing chlorophyll, which gives the leaf its green color. This extraordinary chemical absorbs from sunlight the energy that is used in transforming carbon dioxide and water to carbohydrates, such as sugars and starch.
Why are leaves green in color 6?
Leaves are green because they have a green pigment called chlorophyll. Green leaves manufactureb their food with the help of carbon dioxide, water, and light.
How does water transpire?
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. Overall, this uptake of water at the roots, transport of water through plant tissues, and release of vapor by leaves is known as transpiration.
How does humidity affect transpiration?
The atmosphere has more moisture when the relative humidity is high. This reduces the driving factor for transpiration. Lower levels of relative humidity correspond to less moisture content in the atmosphere and hence higher the driving factor for transpiration.
How will you show with an activity that transpiration occurs through leaves?
#Cover the plant completely and tie its mouth around the base of stem. #Take a similar empty polythene bag and tie iys mouth. #Keep the plant as well as the empty polythene bag in sunlight for 1-2 hours. OBSERVATION:drops of water appear on the inner side of polythene bag no such drops apeear in the empty bag.
How does transpiration work in lab 9A?
In Lab 9A, all of the plants in this experiment will lose water through transpiration, but those affected by the heat sink and the fan will lose a larger amount of water due to the environmental conditions. This transpiration will pull water from the potometer into the plant.
What is the dependent variable in the transpiration experiment?
Since transpiration is the plants main source of water loss, placing the plant in different conditions will test the way different environments affect water loss and the closing or opening of the plant’s stomata. The dependent variable in this experiment is the mass lost through transpiration for each variable.
What factors affect the rate of transpiration?
Heat and humidity play a large role in rate of transpiration. If a plant is continually left in the light or in the path of a fan (wind), then it will lose the most mass through transpiration out of all of the plants because light promotes more photosynthesis to occur, which requires the intake of CO2 and the release of water through the stomata.
What is transpiration in plants?
Transpiration is the loss of water by evaporation of water, usually through the stomata in the leaves. This process is usually initiated by a higher water potential inside the cells of a plant than in the environment surrounding it.