Question
Explain various steps in hybridization of crop plants.
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Discuss how water is replenished in sea.
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Polio.
Briefly describe the structure and functions of cell wall.
Name the fertilizers whose excessive presence in water bodies results in algal growth. What is the consequence of eutrophication.
A body of mass 2kg is thrown vertically upwards with an initial velocity of 20m/s. What will be its potential energy at the end of 2s? (Assume g = 10m/s2).
| Atomic Number | Mass Number | Number of Neutrons | Number of Protons | Number of Electrons | Name of the Atomic Species |
| 9 16 - - - | - 32 24 2 1 | 10 - - - 0 | - - 12 1 1 | - - - - 0 | - Sulphur - - - |