Fungi obtain nutrients by external digestion
a. true
b. false

True.

Explanation:

The fungi are eukaryotes, single or multicellular, all heterotrophs. Although some species may have greenish coloration, the fungi do not have chlorophyll or any other photosynthetic pigment. Thus, they need organic matter to survive. They get the nutrients they need through direct absorption (when these molecules are available in their environment) or by secreting digestive enzymes around them to break down the macromolecules of their organic food; subsequently the resulting nutrients are absorbed. In summary, they usually perform extracellular digestion of food and then absorption of nutrients.

your spelling is a little off : ]

photosynthesis makes the glucose that is used in cellular respiration to make atp. the glucose is then turned back into carbon dioxide, which is used in photosynthesis. while water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.