alleryDry seeds swell up after absorbing water, which lets the seedling push out of the soil. The type of diffusion responsible for this swelling is termed what?
AImbibition
BOsmosis
CAdhesion
DCapillarity
Answer & Solution
Correct answer: A. Imbibition
1. A solid plant material absorbing water and swelling is the clue.
2. Osmosis is solvent movement across a membrane, not solid swelling, so option B is out.
3. Adhesion is attraction between unlike molecules, unrelated to swelling, so option C is out.
4. This special diffusion that swells dry solids is imbibition, option A.
_Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit 14 Transportation in Plants and Circulation in Animals "Imbibition", p.208_
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