: A seed is a "ripened ovule" that contains a mature embryo. Some seeds, like sunflower seeds or nuts, are enclosed in a hard fruit wall that must be split open. You can find detailed botanical classifications on Wikipedia's Fruit page . 3. Medical Engineering (Stents and Tracheal Tubes)
Are you looking at this from a perspective? Is this related to plant biology or gardening? hard mature tube
In modern medicine, "hard" materials are used to create "tubes" that support mature or aging biological systems. : A seed is a "ripened ovule" that contains a mature embryo
: These are patient-specific 3D-printed implants used to keep airways open. In modern medicine, "hard" materials are used to
: These are rigid, tube-like devices used to support weakened or blocked blood vessels or airways. New "battery-free" airway devices are being developed to monitor these tubes for complications. To give you a better guide, could you tell me:
: During a menstrual cycle, a "mature" egg is released from a dominant follicle in the ovary and enters the fallopian tube .