Nutation (botany) flowers to open or close by movements which resemble the simple nutation of dorsiventral organs. Thus, the tulip, crocus, and other vernal flowers are very sensitive to changes in temperature. The crocus can perceive a change of 0.5°C (0.9°F), and will respond to a change of 20°C (36°F) in two minutes. Nutation (botany) Nutation is the bending movements executed by some plant organs, such as stems, leaves, roots, etc., by which the part is inclined successively in various directions. Nutations are due to the unequal rate of growth of different sides of the organ, an inequality which, so far as
Discodermia calyx to cure cancer. Discodermia calyx Discodermia calyx are bowl-shaped sponges that are found in shallow waters in central and southern Japan. These sponges are distributed by the central Kuroshio current and are therefore localized along this current. Like many other sponges, "D. calyx" are very porous. They use the pores in their outer walls to draw in water which they then expel, retaining the nutrients dissolved in the water to nourish themselves. To keep water flowing in and out, the flagella that line their pours beat in either direction. The sponge is most known and used for a molecule that