Explain how tonicity affects water uptake at the roots.
Answer: Water is absorbed from soil to roots by a process called osmosis . Hypotonic soil (having more water concentration than solute concenteration ) causes the water to move from soil to roots whereas the reverse happens with hypertonic soil and with isotonic soil , no water moves at all.
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The acronym HIV stands for which of the following?
A) human intercellular virus B) human immune virus C) human immunodeficiency virus D) human immunity virus E) human immunodeficiency vector
In what way might a virus contribute to cancer formation?
What will be an ideal response?
Which of the following explains the movement of nutrients into a plant's roots at the end of the growing season?
A. active transport B. pressure-flow system C. transpiration D. osmosis
Infection by which of the following is often confused with viral pneumonia?
A) Blastomyces B) Coccidioides C) Mycoplasma D) Streptococcus E) Mycobacterium