One which is radially symmetrical, where± any straight line drawn through the centre produces two mirror images.
The (usually) strap-shaped spreading florets found in some of the Daisy family, occurring either around the edge of the flower-head…
Isotopes of iodine used in the investigation and treatment of hyperthyroidism. Iodine- 12 3 is used for most scans; iodine-…
Hypertension that does not appear to respond to lifestyle changes and drug treatment.
Narrowing of an artery to a kidney that, if severe, may cause hypertension by increasing renin. The renin then generates…
Intruded endosperm in a seed, formed by the infloding of the inner layer of the seed coat, as in nutmeg.…
Folding in a flower bud in which the petals are touching with the edges valvate and reflexed.