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प्रश्न
What is toxicity ?
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उत्तर
It refers to the kind of external osmotic environment of a cell or it refers to the type of solution outside the cell.
संबंधित प्रश्न
the exact location of the Lenticels
Draw a magnified view of the root-hair, and describe, how it helps in the absorption of water from the soil.
Differentiate between the following:
Guttation and bleeding
Explain why:
Raisins swell up in water.
The diagram below represents a layer of epidermal cells showing a fully grown root hair. Study the diagram and answer the questions that follow:
Draw a diagram of the above root hair cell as it would appear when a concentrated solution of fertilizers is added near it.
The below figure shows a root hair:
(i) Label the parts 1 to 4.
(ii) What is the role of part 4?
(iii) Why is the root hair one-celled?
(iv) What will happen to the root hair if some fertilizer is added to the soil near the root hair?
Give Technical Term for the following.
Phenomenon of absorption of water by surface attraction.
A thin strip of epidermal cells of a leaf was observed in a drop of water. They all looked turgid and normal.
(a) Draw a diagram of such a cell.
(b) Draw a diagram of a cell if this strip is transferred to a strong concentrated solution of sugar. What is term used for the effect on the cells ?
The tubular, colorless delicate prolongations of epidennal cells are seen in which region of root in plants?
