- Characteristics of roots, which make them suitable for absorbing water
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.
Mention whether the following statements are true or false
The cell wall of the root cell is a differentially permeable membrane.
Name the following:
The pressure which is responsible for the movement of water molecules across the cortical cells of the root.
Correct the following statements by changing the underlined words:
Xylem transports starch from the leaves to all parts of the plant body
Study the diagram given below and answer the questions that follows:
(a) Name the process being studied in the above experiment
(b) Explain the process mentioned in (a) above
(c) why is oil placed over water?