|Science teacher for over 50 years. MSc. in biology. I can answer questions in general biology, zoology, botany, anatomy and physiology and biochemistry.|
|I will answer questions relating to the identification of bacterial and fungal isolates using phenotypic (macroscopic/microscopic appearance, biochemical bench tests, fatty-acid analysis) as well as genotypic (RiboPrinting) methods. I can also answer questions relating to environmental microbiology, especially those specifically relating to the pharmaceutical industry. I am less familiar with clinical microbiology.|
I am not sure what you mean by cells "performing nutrition"/ You are getting tied up in semantics here as you did in your second paragraph. Cells are not called nutritive organs Let me start with some
The cell theory states that all living things are made of cells. The implication here is that living things contain "live" cells . Of course when living things die they are now made of dead cells.
There is a difference between an onion (which is not a fruit ) and fruit that contains seeds. The cells in the onion nourish the developing sprout just as the potato cells nourish the sprouting buds.
In dried fruits like nuts and grains the necessary materials needed for the seed to germinate are stored in the seed coat called the cotyledon. The dead cells of the shells contain no nutrients. If
There are many types of fruits with different functions. In walnuts the shell is dead tissue and merely protects the seed. The fleshy berry has live cells and attracts hungry birds whicg eat the berry