Question
What would happen when eukaryotic cells are placed in hypotonic, hypertonic and isotonic solutions?
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Give one point of difference between notochord and nerve cord.
Write a note on lichens.
What is air pollution? How is it caused? Give its effects.
Double Matching:
Match the columns I, II and III.
| | Column I | | Column II | | Column III |
| 1. | Oil seeds | a. | Red Sindhi | i. | Sahiwal |
| 2. | Intercropping | b. | Mustard | ii. | Sunflower |
| 3. | Local breeds | c. | Vitamin A | iii. | Maize |
| 4. | Poultry feed | d. | Soybean | iv. | Vitamin K |
Enumerate the factors that influence movement of air.