CELL STRUCTURES AND FUNCTION
BIO MOLECULES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Water expands as it freezes.
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Water is an excellent solvent.
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Water exhibits cohesive behavior.
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Water is able to moderate temperature.
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Detailed explanation-1: -Water is essential for life. Its special properties make water the single most important molecule in plant life. Which of the following properties of water enables it to move from the roots to the leaves of plants? Water exhibits cohesive behavior.
Detailed explanation-2: -Water is a liquid which allows the chemistry of life to take place. It is also a polar molecule which allows most other molecules to be dissolved. Because of this, we call water a “solvent”. Having such a good solvent as water is critical for the functions of life.
Detailed explanation-3: -Capillary action helps bring water up into the roots. With the help of adhesion and cohesion, water can work it’s way all the way up to the branches and leaves.
Detailed explanation-4: -Three properties of a water molecule enable it to move from the root system to the leaves of the plant. They are cohesion, adhesion, and high surface tension. Water molecules are polar as they contain hydrogen bonds. Water molecules can attract one another and this is called cohesion.
Detailed explanation-5: -Water’s Polarity One of water’s important properties is that it is composed of polar molecules: the hydrogen and oxygen within water molecules (H2O) form polar covalent bonds.