Q1) It will have low biodiversity.
This is because the Banana plantation is a mono-plantation work in the agricultural field (i.e. there is only one crop in the field) and hence we can not find diverse species of plants and animals. Thus, this banana plantation has low biodiversity in the ecosystem.
Q2) If a pest attack a banana plant then, either plant leaves or fruits get affected and the quality, as well as quantity of the banana fruit, will be degraded. If the attack is so violent and reproduction of the pests is at a higher rate within the plant then the whole plant gets affected by the disease and the plant may get dead.
Q3) If a strong typhoon comes and heavy flooding occurs, then the high-speed wind of the typhoon causes severe damage to the banana plants. Many banana plants may get fallen and the fruits also get damaged. Also, the heavy flooding will bring pests, insets, and other harmful microbes that cause diseases on the banana plants. The typhoon causes damages and the heavy flood brings new diseases to the banana plants from distant regions.
Q4) The typhoon may cause damages to the temporary shelters as well as permanent houses of the farmers and helpers. The working efficiency will be lowered as the fallen banana plants and damaged trees cause difficulties in working. The financial loss has to bear by the owner and replantation as well as some measures need to be used for future preparations. Thus, the extra time and money will be expensed to the helpers and owners of the banana plantation.
*Note: Please split the questions for the remaining answers. it is not possible to answer all due to time constraints in this session.