Question

While designing an artificial ecosystem at home, write any two things to be kept in mind to convert it into a self-sustaining system. Give reason to justify your answer.

Construct a food chain of four trophic levels comprising the following: Hawk, snake, plants, rat.

20,000 J of energy was transferred by the producers to the organism of second trophic level. Calculate the amount of energy that will be transferred by organisms of the third trophic level to the organisms of the fourth trophic level.

Why do we need to clean aquarium but not a pond? Explain.

Shown here is the extent to which two different animals can see in either direction without turning their heads. In animal 1, the eyes are placed towards the front of the head and in animal 2, the eyes are placed on either side of the head. Since the placement of eyes in the two animals is different, their vision is also slightly different. Animal 2 can see a broader area at any time compared to animal 1. Animal 1 can distinguish depths better compared to animal 2. Based on this, which of the two animals is most likely to be a predator and why?