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transpiration is a necessary evil. justify the statement.

Transpiration is necessary because it helps in transpiration pull that indeed helps in the transportation of water throughout the plant body. It is an evil because bulk of water is lost during this process.

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Transpiration is considered to be a necessary evil because it leads to loss of water from plants but provides the plant with several advantages as well.

  • Creates transpirational pull for transport
  • Supplies water for photosynthesis
  • Transports minerals from soil to all parts of a plant
  • Cools the surface of the leaves (due to the evaporation of water)
  • Keeps the cells turgid; hence, maintains their shape
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The loss of water in the form of vapors from aerial parts of the plant is called transpiration. Transpiration is said to be a necessary evil because it is an inevitable, but potentially harmful, consequence of the existence of wet cell surfaces form which evaporation occurs. Loss of water from the plant results wilting, serious desiccation and often death of a plant if a condition of drought is experienced.

It is supposed to help the plant in the following ways.

  • Excess water getting into the plant might decay the cells. Transpiration prevents it by removing the extra water.
  • Transpiration stream helps in the distribution of nutrients to all the parts of the plant body.
  • Fresh and cool water reaches all the parts of the plant body and this reduces the metabolic heat acting as a coolant.
  • Transpiration indirectly helps in the uptake of salts as the latter get into the plant together with water.
  • Upward movement of water (Ascent of sap) is due to the suction force created by transpiration.

 That is why transpiration is often called a necessary evil.

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transpiration is a necessary evil because when transpiration occurs excess of water is absorbed by the plant  so the water gets wasted when the water evaporates and even there is increase of humidity in the surrounding.
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Transpiration is necessary because it helps in transpiration pull that indeed helps in the transportation of water throughout the plant body. It is an evil because bulk of water is lost during this process.
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Transpiration is considered to be a necessary evil because it leads to loss of water from plants but provides the plant with several advantages as well.

Creates transpirational pull for transport
Supplies water for photosynthesis
Transports minerals from soil to all parts of a plant
Cools the surface of the leaves (due to the evaporation of water)
Keeps the cells turgid; hence, maintains their shape
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it helps in the removal of excessive water
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TRANSPIRATION IS A NECESSARY EVIL BECAUSE IT IS THE LOSS OF EXCESSIVE WATER FROM THE LEAVES .
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it helps is rotation of water butis,evil bed it led lose of water in plant
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bile contain 2main important component i.e. bile salts and bile pigment.
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TRANSPIRATION IS CONSIDERED TO BE A NECESSARY EVIL BECAUSE IT LEADS TO LOSS OF WATER FROM PLANTS BUT PROVIDES THE PLANT WITH SEVERAL ADVANTAGES AS WELL. • CREATES TRANSPIRATIONAL PULL FOR TRANSPORT • SUPPLIES WATER FOR PHOTOSYNTHESIS • TRANSPORTS MINERALS FROM SOIL TO ALL PARTS OF A PLANT • COOLS THE SURFACE OF THE LEAVES (DUE TO THE EVAPORATION OF WATER) • KEEPS THE CELLS TURGID; HENCE, MAINTAINS THEIR SHAPE
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Transpiration is considered as necessary evil as it helps in transportation of water throughout the plant body. It cools the surface of the leaves, and transports minerals from the soil to all parts of the plant body.
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The stomata are primarily meant for absorption of CO2 but these also help in exchange of gases, but at the same time water vapors also escape through stomata. Thus transpiration is described as necessary evil because it is an inevitable process but potentially harmful. Loss of water can lead to wilting, serious desiccation, and often death of a plant, if there is shortage of water. There is good evidence that even mild water stress results in reduced growth rate, and reduction in yield. However, transpiration is beneficial to the plants in several ways. 1) Mineral Absorption: Minerals absorbed in water are absorbed into the roots; move up through the plant in the transpiration stream. 2) Optimum Turgidity: In some plants if transpiration is not allowed to occur, plants become very turgid, do not grow well and there is shortage of water in their cells. 3) Energy Exchange: When water is evaporated from the exposed surface of cells of leaves, it exerts a cooling effect on plant. 4) Effect on Growth and Development: Transpiration is a necessary factor in the normal growth of some plants e.g. pear, sunflower. 5) Absorption of Water: Water is conducted or transported in upward direction in most tall plants due to transpiration. 6) Exchange of Gases: Wet surface of leaf cells allow gaseous exchange
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My drawing Made by Shrsti shakya Plzz plzz like it

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To prepare a good temporary mount of the petunia leaf peel showing many stomata, from where we have to get the peel from stomata

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Symbiotic association means dependence of any two organisms on each other so that both of them fulfill their needs. Eg Lichens live in symbiotic association in this one partner is algae and other is fungi. Fungi provide minerals and nutrition to the algae and then algae makes food with the help of sunlight and give it to fungi. In this case both their requirements are fulfilled.
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The wave like muscular contraction in tubular structure especially organs of the digestive system such as the oesophagus and the intestine peristalsis is characterized by alternate contraction and relaxation which pushes ingested food through the digestive tract to watch its release at the anus If you like Thumbs up for this answer
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thanks
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Peristalsis is a process of contraction and relaxation of the muscle around parts of the alimentary canal. The most familiar example of this is in the oesophagus. In the oesophagus, peristalsis pushes the ball of food down the oesophagus. The smooth muscle of the oesophagus contracts and relaxes in sequence, and this pushes the ball of food down the oesophagus.
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XH
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Transpiration is the loss of excess water in the form of water vapor from the aerial parts of the plant.
*Transpiration results in transpiration pull which thereby increase the rate of absorption of water along with minerals from the soil through roots.
*Transpiration helps in transportation of absorbed minerals to all the parts of the plant.
*Transpiration provides water for the process of photosynthesis.
*Transpiration helps in cooling the structures of the plant when exposed to hot sunlight.
*Transpiration helps the cells to maintain their turgidity.
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The loss of excees water in the form of vapor from the aerial parts of the plant is known as transpiration. Transpiration is essential for the movement of water and minerals from the root to the healthy parts of the plant. But excess transpiration may result in drying up of the leaves or wilting and loss of soil water. Hence it is termed as a necessary evil.
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Transpiration is necessary because it helps in transpiration pull that indeed helps in the transportation of water throughout the plant body. It is an evil because bulk of water is lost during this process.
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