Q. Consider the following statements:
  1. Forest, grassland and river are examples of terrestrial ecosystems.
  2. Crop fields and aquarium are examples of man-made ecosystems.
Which of the above mentioned statements is/are incorrect?

Answer: Only 1
Notes: Forest, grassland and desert are some examples of terrestrial ecosystems; pond, lake, wetland, river and estuary are some examples of aquatic ecosystems. Crop fields and an aquarium may also be considered as man-made ecosystems.