Give the excretory products and where there are excreted?
When you inhale, you take in oxygen. Your body then uses this oxygen in aerobic respiration and in this process, carbon dioxide (the waste product) is produced. Thus this carbon dioxide is released by your body when you exhale, and we say that it is excreted as a waste/excretory product. This is similar to the excretory system whereby the waste products are removed from the body through sweat, urine etc.
Plant's don't really excrete waste the way that people do. Because it costs them more energy to obtain nutrients any non-essential nutrients are packaged into the vacuole (a space within each cell). Plants are masters at detoxifying waste products, so generally only CO2 is released. Ammonia is sometimes produced, but is usually metabolised to amino acids rather than excreted.
Excretory system excretes liquid waste from the body. Interestingly the only liquid waste excreted by the excretory system is water. At least I do not know other liquid waste that is excreted by the kidneys. All other wastes are dissolved in the urine and they are solid. Skin and lungs also contribute in this job.