Why do plants need water?

Water is very important for the survival of human beings, plants and animals. There are many reasons why water is needed by plants.

Water acts as the solvent for the minerals present in the soil and with the absorption of water from the soil minerals also enters the plant body. While these minerals could not be easily and naturally taken up by the plants if they were in solid state.

Water is used to transport the metabolic products from one part to the other where they are needed. So it acts as a vehicle for the transportation.

Photosynthesis is a process in plants to make their food. And water is an electron source of this process.

6CO2 + 6H2O – C6H1206 + 6O2

In this process six water molecules combine with six carbon molecules to form, oxygen and glucose (food for plants)

Water is evaporated through the stomata present on the leaves. It cools the plant in the hot sunny days, in the similar manner as we get cool by perspiration. Roots also store the water to be used in winter. In cold days water movement from the soil is very slow but the leaves loses water by wind in the winter too. So the stored water helps the plant to compensate with it. If no water is available to the plant then the tissues will start dying in the leaves and they will turn brown in color. Evaporation is also necessary for plant to let the stomata remain open for the intake of carbon dioxide.

Water is necessary for the turgidity i.e. the pressure of water in the cells of plants which is important for the survival of plant else it will wilt. It is also required for the growth as it expands the plant cells.

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  1. Hi, i was wondering who wrote this and when it was written..

    I need it for science fair get back to me soon.

  2. It was written 2-3 weeks ago by Letusfindout team.

  3. Hey I really learned a lot about why plants need to have water I am doing a science project on how long can a plant live with out water.

  4. thanx it helped me alot

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  6. Thank you. My teacher has been bugging me for something on plant growth. She yelled at me for my definition. Well, thanks!

  7. Clear and easy to understand, really useful stuff.

  8. this explanation was great! I’m doing a science project to find out if marigolds will germinate without water.

  9. Why do leaves have the green covering on them??

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  16. hi, i was wondering who wrote this and when it was written i need it for the science fair thank you !!!!!!!!!!!!!!!!!!!!!!!!!!

  17. hiii…why do LEAVES need a continuous supply of water?

  18. This is so helpful for the information that we all need to know for studying why plants need water. I want to know more about when plants need more water and what kind of plants do need more and why. Thank you for sharing.

  19. Thx it helped me alot.xx

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  21. hi thanx this is so easy to understand u saved my life from detintion had an essay had to do it thanx any way :)

  22. I want to write a report on why plant need water

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  25. Same. I’m doing a science fair project on plants. I’m in grade 5. How bout you?

  26. Hey, Jessica how old are you? Wat grade? Do u play soccer?
    I’m doing a report on stranger’s lifes cause we gotta make a chart thing……..

  27. What happened to Germination of seeds in plants?

  28. Thank you soo much!!!! i needed this for a science project about germination and this helped me a lot!!! xxxx Tasha

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