Answer:
Genotype refers to the genetic makeup, composition, or structure of a specific organism.
Gamete refers to the cell.
phenotype refers to the physical expression of those genes.
Explanation:
There are no rooted plants in the limnetic zone of the lake as well as the pond since the open water in where the rooted plants would not survive since it is muddy and phytoplankton are the only photosynthetic organisms.
I believe the answer is b.