I recently had a science exam and there is one question I would like to know about. Question: Some students noted the number of organisms living in a pond. The table below shows the number of plants and animals: Plants Position in pond Number of plants Fully Submerged: 124 Partially Submerged: 186 Floating: 203 Legs Animals Legs Number of Animals With no legs: 44 With legs: 36 One of the students commented that there are at least 6 different populations living in the pond. Is he correct? (a) Correct (b) Incorrect My answer was that he is incorrect since it is not possible to make such a conclusion from the data given as some animals like the tadpole have legs when they are adult frogs but not when they are younger. Also, slightly older tadpoles have legs while newborn ones don't. However, I was marked wrong and I would like to confirm here whether I am correct. Thanks.