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Question
Choose the correct answer:
Which one is semi-permeable?
Options
Plasmalemma
Cell wall
Endoplasmic reticulum
Golgi body
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Solution
Plasmalemma
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RELATED QUESTIONS
The figure given below is a diagrammatic representation of a part of the cross section of the root in the root hair zone. Study the same and then answer the questions that follow
(i) Name the parts indicated by the guidelines 1 to 4.
(ii) Which is the process that enables the passage of water from the soil into the root hair?
(iii) Name the pressure that is responsible for the movement of water in the direction indicated by the arrows. Define it.
(iv) Due to an excess of this pressure sometimes drops of water are found along the leaf margins of some plants especially in the early mornings. What is the phenomenon called?
(v) Draw a well labelled diagram of the root hair cell as it would appear if an excess of fertiliser is added to the soil close to it.
How is root hair adapted for the absorption of water from the soil?
The apparatus arranged alongside signifies an important process.
(i) Name the process.
(ii) Where does this process occur in plants?
(iii) What solution is placed inside the dialysis tubing?
(iv) What happens to the level of the solution in the capillary tube?
Study the experimental setup in the figure and then answer the question that follow.
Explain the phenomenon mention in question 8.1 .
The below figure shows a root hair:
(i) Label the parts 1 to 4.
(ii) What is the role of part 4?
(iii) Why is the root hair one-celled?
(iv) What will happen to the root hair if some fertilizer is added to the soil near the root hair?
Outer layer of root hair is made up of ________.
What would happen to the leaves of a plant that transpires more water than its absorption in the roots?
How many regions are there in a typical root?
Root hair is a cytoplasmic extension of ______.
