The correct answer is A. Agaricus.
Agaricus is a fungus that is dependent on saprophytic mode of nutrition. This means that it obtains its nutrients from dead and decaying organic matter. Agaricus is a common type of mushroom that is found in forests and other areas with decaying plant material.
B. Ulothrix is a green algae that is photosynthetic. This means that it can produce its own food using sunlight. Ulothrix is a common type of algae that is found in freshwater habitats.
C. Riccia is a liverwort that is also photosynthetic. This means that it can produce its own food using sunlight. Riccia is a common type of liverwort that is found in moist habitats.
D. Cladophora is a green algae that is also photosynthetic. This means that it can produce its own food using sunlight. Cladophora is a common type of algae that is found in freshwater habitats.
Saprophytic nutrition is a type of nutrition in which an organism obtains its nutrients from dead and decaying organic matter. This type of nutrition is common among fungi, bacteria, and some protists. Saprophytic organisms are important in the decomposition of dead organisms and the recycling of nutrients in the environment.