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प्रश्न
Choose the correct answer:
Swelling of wooden doors during rains is caused by ___________
पर्याय
endosmosis
imbibition
capillarity
osmosis
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उत्तर
Swelling of wooden doors during rains is caused by imbibition
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संबंधित प्रश्न
Match the items in column I with those in column II
| Column I | Column II | ||
| (a) | Xylem | (i) | semi - permeable |
| (b) | Phloem | (ii) | permeable |
| (c) | Cell membrane | (iii) | downward flow of sap |
| (d) | Root pressure | (iv) | upward flow of water |
| (e) | Cell wall | (v) | guttation |
Explain the mechanism of closing and opening of the stomata.
What part is played by the following in the uptake of water into the root hair?
The cell wall
Name the following:
Tissue concerned with upward conduction of water.
Choose the correct answer:
Which tissue makes passage for ascent of sap?
Name the following:
The solution outside the cell having lower solute concentration than the fluids.
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.
Epiphytic plants like orchids absorb water vapours from air with the help of epiphytic roots having special tissue called ____________.
____________plants like orchids absorb water vapours from air with the help of epiphytic roots having special tissue called velamen.
Aquatic animals like fish excrete their wastes in gaseous form as ______.
