Question
Pollination
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| Column A | Column B |
| (1) Use of measuring scale | (a) Record of primary growth |
| (2) Crescograph | (b) Increase in height of plant |
| (3) Auxanometer | (c) Measure growth in field |
| (4) Horizontal microscope | (d) Measurement of linear growth of shoot |
| Respiratory capacities | Respiratory volumes |
| (1) Residual volume (RV) | (a) 500 ml |
| (2) Vital capacity (VC) | (b) 2000 – 3000 ml |
| (3) Tidal volume (TV) | (c) 1100 – 1200 ml |
| (4) Inspiratory reserve volume (IRV) | (d) 4100 – 4600 ml |
Explain the different factors responsible for genetic variations.
Complete the following table:
| Organism | Diploid chromosome number |
| Mouse | ————- |
| Fruitfly | ———— |
| Roundworm | ————- |
| Yeast | ————– |