Slime moulds as saprophytic protists
Slime moulds are categorized as saprophytic protists because they obtain their nutrients by decomposing organic matter. They play a crucial role in breaking down dead plant material, fungi, and bacteria in the environment. This decomposition process is essential for recycling nutrients back into the ecosystem.

Feeding mechanism of slime moulds
Slime moulds feed by engulfing their food source, which consists of bacteria, spores, and other organic material. They secrete enzymes to break down the organic matter into simpler compounds that can be absorbed by the organism. This process of decomposition helps in nutrient cycling and maintaining the balance of the ecosystem.

Life cycle of slime moulds
Slime moulds have a unique life cycle that involves two main stages: the vegetative stage and the reproductive stage. During the vegetative stage, the slime mould exists as a single-celled organism or a mass of cells. When conditions are favorable, they form spore-bearing structures for reproduction. These spores are dispersed into the environment, where they can germinate and start a new life cycle.

Ecological significance of slime moulds
Slime moulds play a crucial role in the ecosystem as decomposers, helping to break down dead organic matter and recycle nutrients. They contribute to the health of the environment by ensuring that essential nutrients are returned to the soil for use by plants and other organisms. Their feeding mechanism and life cycle help maintain the balance of the ecosystem and support biodiversity.
In conclusion, slime moulds are saprophytic protists that play a vital role in nutrient cycling and ecosystem health. Their feeding mechanism, life cycle, and ecological significance highlight their importance in maintaining a balanced and healthy environment.