Question

Seeds placed in water imbibe the same because of

• A. Exomosis
• B. Higher $\Psi \omega$
• C. Lower $\Psi \omega$
• D. Pressure of vacuoles

Answer 1

Answer: (C)

Lower $\Psi \omega$

The rate at which the seeds imbibe water depends on the gradient of water potential between water and the seed. Imbibition will be fastest when dry seeds with low water potential are placed in pure water. As the seeds take up water, and its water potential rises gradually towards zero, the gradient will decline and imbibition will slow down in consequence.

Thus, the correct answer is option (C).