Q1: The most suitable fertiliser for accelerating seeding or fruit formation in later stages of plant growth is __________ fertiliser.

ANS:B - phosphatic

Phosphatic fertilisers are fertilisers that contain phosphorus as a primary nutrient. Phosphorus is an essential element for plant growth and development, playing a crucial role in various physiological processes. Phosphatic fertilisers provide plants with phosphorus in a form that is readily available for uptake and utilization. Phosphorus is involved in key biological processes such as photosynthesis, energy transfer, and cell division. It is particularly important for promoting root development, early plant growth, and seed formation. Phosphorus also plays a vital role in the formation of nucleic acids, which are essential for genetic material and protein synthesis within the plant. Phosphatic fertilisers can come in various forms, including superphosphate, triple superphosphate, and diammonium phosphate (DAP), among others. These fertilisers typically contain phosphorus in the form of phosphate ions (PO4^3-) or as compounds such as ammonium phosphate. When applied to soil, phosphatic fertilisers help replenish phosphorus levels, especially in soils with low phosphorus availability. This supplementation of phosphorus ensures optimal plant growth and development, leading to improved crop yields and quality. Overall, phosphatic fertilisers play a crucial role in providing plants with the necessary phosphorus to support their growth, development, and reproductive processes. The most suitable fertiliser for accelerating seeding or fruit formation in later stages of plant growth is potassic fertiliser. Potassium plays a crucial role in fruit development, seed formation, and overall plant vigor. It promotes the transportation of sugars and starches within the plant, enhancing fruit quality and seed production. Additionally, potassium helps in water uptake and improves plant resistance to diseases and environmental stresses. Therefore, the application of potassic fertilisers during later stages of plant growth can significantly contribute to the development of seeds and fruits.