To determine how many of the provided statements are wrong, we will analyze each statement one by one.
### Step-by-step Solution:
1. **Statement A**: "In terrestrial ecosystem, maximum energy is present in T1."
- **Analysis**: T1 represents the producers in a trophic level. In terrestrial ecosystems, producers (like plants) capture solar energy and thus have the maximum energy.
- **Conclusion**: This statement is **correct**.
2. **Statement B**: "In grassland ecosystem, the pyramid of biomass is upright."
- **Analysis**: In a grassland ecosystem, the biomass of producers (grasses) is greater than that of primary consumers (herbivores), which makes the pyramid of biomass upright.
- **Conclusion**: This statement is **correct**.
3. **Statement C**: "In pyramid of food, the producers occupy the base / bottom."
- **Analysis**: In any food pyramid, producers are always at the base, as they form the foundation of the food chain.
- **Conclusion**: This statement is **correct**.
4. **Statement D**: "Energy flow in an ecosystem is bidirectional."
- **Analysis**: Energy flow in ecosystems is unidirectional, meaning it flows from producers to consumers and cannot flow back.
- **Conclusion**: This statement is **wrong**.
5. **Statement E**: "If all green plants of earth are destroyed, all animals shall die ultimately."
- **Analysis**: If all green plants (producers) are destroyed, the food chain collapses, leading to the extinction of herbivores and subsequently carnivores.
- **Conclusion**: This statement is **correct**.
6. **Statement F**: "The typical biome of an area having 50 to 100 cm of rainfall is grassland."
- **Analysis**: Grasslands typically receive between 25 to 75 cm of rainfall, but some classifications may extend this range. However, 50 to 100 cm is more characteristic of forests.
- **Conclusion**: This statement is **wrong**.
### Summary of Findings:
- **Correct Statements**: A, B, C, E
- **Wrong Statements**: D, F
### Final Count of Wrong Statements:
There are **2 wrong statements** (D and F).
