science
Grade-2
Easy
Question
What does the image represent?
- The stem moves water up the plant
- The root moves water up the plant
- The stem moves water down the plant
- The roots move water down the plant
Hint:
Because water molecules like to stick together (cohesion) and like to stick to the walls of the tubes of cellulose (adhesion), they rise up the tubes all the way from the roots to the leaves. Water then evaporates from the leaves, helping to draw up more water from the roots. This process is called capillary action.
The correct answer is: The stem moves water up the plant
- Plant stems have some very special cells called xylem.
- These cells form long thin tubes that run from the roots up the stems to the leaves commonly called xylem elements.
- Their job is to carry water upward from the roots to every part of a plant.
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