Question

What is the function of transpiration?

Answer 1

Transportation is the process of water movement through a plant and its evaporation from aerial parts, such as leaves, stems and flowers. 


The two functions of transpiration is pumping minerals and water to the leaves for photosynthesis and cooling the plant.

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Answer 2

Plants have many important functions, like making leaves, making flowers and seeds, growing, storing starches in the roots etc, but we humans are usually unaware of the vital function of transpiration.

It is estimated that 98% of a plants energy is used in the work of transpiration. How does this process work? and why is it so essential to a plant?

Water moves from the soil into plant roots, up through the sapwood into the leaves. 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.

Plants need to cool themselves for several reasons. When temperatures are too high, energy systems (metabolic functions) slow, and growth and flowering slows or stops. In extreme heat, plants are severely stressed and can die. Sometimes heat will cause bubbles to form that block the flow of water, leading to dehydration. Transpiration is an evaporative cooling system that brings down the temperature of plants, but since it leads to water loss, it must be accurately regulated. The ingenious system that regulates this function consists of a guard cell on each side of the tiny pores (stomata). When water moves into the guard cells, they swell and arch open; as water moves out, the guard cells relax and close. The guard cells are sensitive to light intensity, temperature, wind, relative humidity and carbon dioxide concentrations inside the leaf.

The stomata (pores) must open to take in carbon dioxide for photosynthesis (especially important on mornings of sunny days). And the more they are open, the more plants transpire and lose water. So watering plants early in the morning will support plant energy, especially on hot summer days. I hope this answers help you please make me brainliest