The answer is A. Putting the aquarium in the dark means that
the aquatic plants will not be able to photosynthesize. The process of photosynthesis produces oxygen
as a by-product. The oxygen is used by the fishes in respiration and release
carbon dioxide. The carbon dioxide is used by the aquatic plants in photosynthesis.
the peroxisomes are dysfunctional and no breaking down cellular wastes. The chloroplasts are dysfunctional and not breaking down cellular wastes. The cell nucleus is dysfunctional and not breaking down cellular wastes.
These two apply.
1.) The sporophyte of seed plants is photosynthetically independent.
2.) In seed plants, dispersed spores contain a multicellular gametophyte.
