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Question
They are pipe-like, consisting of a group of specialised cells. They transport substances and form two-way traffic in plants. Which of the following terms qualify for the features mentioned above?
Options
Xylem tissue
Vascular tissue
Root hairs
Phloem tissue
Solution
Phloem tissue
Explanation:
Phloem tissue consists of a group of specialised cells. Sieve tubes are elongated tubular conducting channels of phloem through which food is transported. The contents of the phloem can move in the upward as well as in the downward direction. Therefore, they form two-way traffic in plants.
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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.
The diagram of an given below demonstrates a particular process in plants. Study the same and answer the questions that follow :
(i) Name the apparatus.
(ii) Which phenomenon is demonstrated by this apparatus?
(iii) Explain the phenomenon mentioned in (ii) above.
(iv) State two limitations of using this apparatus.
(v) What is the importance of the air bubble in the experiment?
(vi) Name the structures in a plant through which the above process takes place.
The phenomenon of loss of water through a cut stem or injured part of plant is called ___________.
Name the following:
The solution outside the cell having lower solute concentration than the fluids.
Multiple Choice Question:
Process of endosmosis stops:
Draw a neat and labelled diagram of the Root tip showing the root hair zone.
Root hairs are ______
Which part of the root helps in the maximum absorption of water and minerals?
Root hair occurs in the zone of ____________.
