A teacher says, “Okay, class. Today we’re going to be talking about the tenses. If I say ‘I’m beautiful,’ which tense is it?”
Little Johnny raises his hand and says, “Obviously past tense, Miss.”
Gottlieb HaberlandtBorn 28 Nov 1854; died 30 Jan 1945 at age 90.Austrian botanist, pioneer in the development of physiological plant anatomy, and the first person to study plant tissue culture (1921). In Physiologische Pflanzenanatomie (1884; "Physiological Plant Anatomy") he distinguished 12 tissue systems based on function (mechanical, absorptive, photosynthetic, etc.) Although his system was not accepted by other botanists, the analysis of the relations between structure and environment has been useful in the study of plant adaptations to different habitats. In 1902, he released the hypothesis of "totipotency" - that even the smallest unit of a cell is capable of forming a complete plant in the future. In 1913, Haberlandt discovered that a compound found in phloem had the ability to stimulate cell division. |
