2)Most species of fungi grow on land and obtain their nutrients from dead organic matter. Some fungi are symbionts or parasites on other organisms. The majority of species feed by secreting enzymes, which partially digest the food extracellularly, and then absorbing the partially digested food to complete digestion internally. As with animals, the major storage carbohydrate of fungi is glycogen. Fungi lack the complex vascular system found in higher plants, so their transport of food and water is less efficient.
1)Orchids will fare better in encounters with pests, diseases and temperature extremes if they are in a good state of overall health. A plant suffering from underor over-fertilizing, or stressed from lack of water is much more likely to be injured by any additional strain.Orchids grown under less than ideal conditions are more likely to be a target for infection or infestation. Make an extra effort now to get plants and their greenhouse or growing area in good shape for the shorter, darker days ahead by removing old foliage, weeds and dying flowers. An autumn cleanup can minimize or prevent the pest and disease problems that can crop up in the darker and more crowded conditions that often characterize thewinter growing area.