Chlorophyll Chlorosis can also be caused by pathogens including viruses, bacteria and fungal infections, or sap-sucking insects. Anthocyanins are other plant pigments. The absorbance pattern responsible for the red color of anthocyanins may be complementary to that of green chlorophyll in photosynthetically active tissues such as young "Quercus coccifera" leaves. It may protect the leaves from attacks by plant eaters that may be attracted by green color. The chlorophyll maps show milligrams of chlorophyll per cubic meter of seawater each month. Places where chlorophyll amounts were very low, indicating very low numbers of phytoplankton, are blue. Places where chlorophyll concentrations were
The Lotus Eaters (Weinbaum) Oscar is very intelligent, quickly picking up English from Hammond and Burlingame. The humans learn that the Oscar beings reproduce by releasing clear bubbles full of gaseous spores. When the bubbles burst, the spores come to rest on another Oscar being, eventually grow into another individual, and bud off. In “Parasite Planet”, the vicious, night-dwelling "Triops noctivivans" used these bubbles to attack Hammond and Burlingame, since the spores have a soporific effect on humans. The humans are horrified to learn that, being plants, the Oscar beings have no survival instinct. Despite their greater-than-human intelligence, the Oscar beings react with indifference