Advertisements
Advertisements
प्रश्न
Give Technical Term for the following.
Phenomenon of absorption of water by surface attraction.
Advertisements
उत्तर
Imbibition
संबंधित प्रश्न
The process by which root hairs absorb water from the soil.
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 statement is true (T) or false (F) and give an explanation in support of your answer.
If the phloem of a twig is removed keeping the xylem intact, the leaves of a twig wilt.
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.
How is root hair structurally adapted for absorption of water from the soil?
Multiple Choice Question:
Water will be absorbed by the root hairs when:
From which type of cells, root hair is originated
Why and how does water enter continuously into the root xylem?
Give other name of epidermal cells in roots of plants.
