Plants absorb water from the soil by osmosis. They absorb mineral ions by active transport, against the concentration gradient. Root hair cells are adapted for taking up water and mineral ions by having a large surface area to increase the rate of absorption.
3. Fill in the blanks : 1. Tagore felt that childhood ought to be a time of _____ 2. British government needed a regular supply of____ and loyal Indians. 3. Thomas Arnold felt that a study of the classics________ the mind. 4. James Mill said that the aim of education ought to be to teach what was useful and_______ 5. Macaulay said that teaching of English could be a way of________ Indian people.
If both the salt and the impurities are soluble in a particular solvent, the salt can be purified by the process of crystallization, in which the crystals of pure salt crystallize, separating the pure salt from the rest of the impure solution.