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प्रश्न
Concentration of mineral nutrient elements is higher inside the root hairs than in the surrounding soil. How do roots take them in from the soil?
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उत्तर
If the concentration of mineral nutrient elements is higher inside the root-hairs than in the
surrounding soil, then roots take them in from the soil by 'active transport'. In active transport, the mineral ions are forcibly carried from the surrounding soil i.e. the region of their lower concentration into the roots i.e. the region of their higher concentration through the cell membrane by expenditure of energy. This energy is supplied by the cell in the form of ATP.
संबंधित प्रश्न
The phenomenon of loss of water through a cut stem or injured part of plant is called ___________.
How does movement and absorption of water take place through the roots?
Choose the correct answer:
The water is translocated upwards from the roots through _____________
Mention whether the following statement is true (T) or false (F) and give an explanation in support of your answer.
Guttation in plants occurs maximum at midday.
Draw a cross-section of root showing association of soil particles with root hairs.
Draw a diagram of the root hair cell as it would appear when a concentrated solution of fertilizers is added near it.
Minerals cannot be passively absorbed by the roots.
Epiphytic plants like ____________ 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 ______.
Water in the root enters due to ______.
