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Question
Mention two adaptations in roots for absorption of water from the soil.
Solution
The root hair cell's vacuole contains water. The root hair can absorb water from the soil in two ways:
- The presence of several elongated root hairs increases the overall root surface area available for water absorption.
- Their thin walls promote water intake via osmosis.
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RELATED QUESTIONS
The diagram below represents a layer of epidermal cells showing fully grown root hair. Study the diagram and answer the questions that follow:
- Name the parts labelled A, B, C and D.
- The root hair cell is in a turgid state. Name and explain the process that caused this state.
- Mention one distinct difference between the parts labelled A and B.
- Draw a diagram of the above root hair cell as it would appear when a concentrated solution of fertiliser is added near it.
Cell wall is ______ but plasma membrane is ______.
______ refers to the membrane which allows passage of certain substances more readily than others.
For which of the following reason root cap has no function in water absorption?
Arrange and rewrite the terms in the group in the correct order to be in a logical sequence beginning with the term that is underlined:
Xylem, Soil water, Cortical cells, Root hair.
Mention one characteristic of roots for absorbing water from the soil.
Which of the following is a living, semi-permeable membrane?
