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Question
The diagram below represents a layer of epidermal cells showing a fully grown root hair. Study the diagram and answer the questions that follow:
Mention one distinct difference between the parts labelled A and B.
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Solution
|
Cell wall |
Cell membrane |
|
The cell wall of a root hair is freely permeable and allows both salt and water to pass through. |
The cell membrane of a root hair is semi-permeable and does not allow large dissolved salt molecules to pass through. |
RELATED QUESTIONS
Name the following:
The process by which water enters root hairs.
The diagram given below represents a plant cell after being placed in a strong sugar solution. Guidelines 1 to 5 indicate the following:
1. Strong sugar solution
2. Cell wall
3. Protoplasm
4. Large vacuole
5. Nucleus
Study the diagram and answer the questions that follow:
(i) What is the state of the cell shown in the diagram?
(ii) Name the structure which acts as a selectively permeable membrane.
(iii) If the cell had been placed in distilled water instead of strong sugar solution which feature would not have been present?
(iv) If the cell in the diagram possessed chloroplasts where would these be present?
(v) Name any one feature of this plant cell which is not present in animal cells.
Choose the correct answer:
Swelling of wooden doors during rains is caused by ___________
Name the following:
Name the process by which intact plants lose water in the form of droplets.
Write a note on the morphological structure of the root.
Part of the root that absorbs water from the soil is ______.
Aquatic animals like fish excrete their wastes in gaseous form as ______.
Draw a neat and proportionate diagram of root hair and label mitochondria, nucleus and vacuole.
