Question
Sketch the graphs to show directional and stabilizing selection.
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| Column A | Column B |
| (1) Mutualism | ————– |
| (2) Commensalism | ————— |
| (3) Parasitism | ————– |
| Era | Dominating group of animals |
| 1. Coenozoic | ………………………………. |
| 2. ………………………………. | Reptiles |
| 3. Palaeozoic | ………………………………. |
| 4. ………………………………. | Lower Invertebrates |
| WBCS | % | Nucleus | Function |
| Neutrophils | 70% | ___________ | ______________________________ |
| __________ | ________ | Twisted | Secretes heparin, histamine and serotonin |
| Fosinophils | _______ | __________ | Antihistamin/Antiallergic in function |
| Manocytes | 3-5% | __________ | ________________________________ |
| ________ | _________ | __________ | Responsible for cell mediated as well as humoral immunity |
Complete the table of mineral nutrition of plants.
| Mineral element | Where required | Role | Deficiencysymptom |
| (1) Magnesium | Leaves, developing seeds | Activator of enzymes Chlorophyll maintains ribosome structure | _______________ |
| (2) Manganese | _______________ | Activates certain enzymes carboxylases | Chlorosis and grey spots |
| (3) Molybdenum | ______________ | Activates certain enzymes in Nitrogen metabolism | Slight retardation of growth |
| Trophic levels | Type of organisms | Status | Example |
| …………….…. | …………………….. | Secondary consumer | …………………….. |
| ……………..… | Herbivore, Heterotrophs | …………………….. | ……………………. |
| ……………..… | Autotrophs | ……………………. | Phytoplankton, grass, trees |
| Phenomena | Examples |
| (1) Stratification | ————– |
| (2) Zonation | ————— |
| (3) Succession | ————– |