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Question
Multiple Choice Question:
Water will be absorbed by the root hairs when:
Options
Concentration of solutes in the cell sap is high
Concentration of solutes in the soil is high
The plant is rapidly respiring
None of the above
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Solution
Concentration of solutes in the cell sap is high
RELATED QUESTIONS
The phenomenon of loss of water through a cut stem or injured part of plant is called ___________.
Three plants (a), (b) and (c) were placed in beakers containing coloured water. The water in each beaker was covered with a layer of oil. The leaves were removed from plant (b), while plant (c) was exposed to strong light.
(i) In which plant, (a), (b) or (c) would the water move up the fastest?
(ii) In which plant (a), (b) or (c), would the water move up slowly?
(iii) Why was the water covered with a layer of oil?
(iv) What is being investigated by this experiment?
Choose the correct answer:
Meaning of ascent of sap is ____________
What is toxicity ?
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 guidelines ‘1’ to ‘5’
(ii) Is the root hair cell unicellular or multi-cellular?
(iii) Draw a labeled diagram of the root hair cell as it would appear if some fertilizer is added to the soil close to it.
(iv) Name the process responsible for the entry of water molecules from the soil into A1 and then A2.
(v) What pressure is responsible for the movement of water in the direction indicated by arrows?
(vi) How is this pressure set up?
Name the following:
Name the process by which intact plants lose water in the form of droplets.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Xylem is the water-conducting tissue in plants.
Most plant cells and tissues constitutes _____ % water.
Epiphytic plants like orchids absorb water vapours from air with the help of epiphytic roots having special tissue called ____________.
Aquatic animals like fish excrete their wastes in gaseous form as ______.
