Q. Which of the following is an example of lotic ecosystem ?
Answer: Stream ecosystem
Notes: The term "lotic" refers to flowing water ecosystems, which are characterized by the constant movement of water.  Stream ecosystem is an example of a lotic ecosystem. Streams are bodies of flowing water that can vary in size from small, babbling brooks to larger rivers. They have a continuous flow of water, which makes them a classic example of a lotic ecosystem.