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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.
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संबंधित प्रश्न
Match the items in column I with those in column II
| Column I | Column II | ||
| (a) | Xylem | (i) | semi - permeable |
| (b) | Phloem | (ii) | permeable |
| (c) | Cell membrane | (iii) | downward flow of sap |
| (d) | Root pressure | (iv) | upward flow of water |
| (e) | Cell wall | (v) | guttation |
What would happen to the root hair of a potted plant if the soil was watered with an extremely concentrated solution of sodium chloride?
The diagram below represents a layer of epidermal cells showing a fully grown root hair. Study the diagram and answer the questions that follow:
The root hair cell is in a turgid state. Name and explain the process that caused this state.
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.
A few RBC’s were kept in three test tubes containing isotonic, hypotonic and hypertonic solutions. What will be the expected observations after a few hours? Explain.
Give Technical Term for the following.
Tissue which transports manufactured food from leaves to other parts of the plant.
Identify the zone in wbkh root hair occurs.
How many regions are there in a typical root?
