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प्रश्न
Choose the correct answer:
Swelling of wooden doors during rains is caused by ___________
विकल्प
endosmosis
imbibition
capillarity
osmosis
उत्तर
Swelling of wooden doors during rains is caused by imbibition
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संबंधित प्रश्न
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.
State whether the following statement is true or false. Rewrite the false statement correctly.
Water absorption mainly occurs through the root-hair.
How does movement and absorption of water take place through the roots?
Choose the correct answer:
An example of a selective permeable membrane is __________
Root hairs become flaccid, when fertilizers are added to the moist soil around it. Explain.
Multiple Choice Question:
Water will be absorbed by the root hairs when:
Root hairs are ______
Trace the pathway followed by water molecules from the time it enters a plant root to the time it escapes into the atmosphere from a leaf.
Aquatic animals like fish excrete their wastes in gaseous form as
