Teacher: "Why are you late this morning?"
Student: "Its my alarm clock. Everyone got up except me!"
Teacher: How did the alarm clock make you the only one not to get up?"
Student: "There are eight of us in the my family and the alarm clock was only set for seven."
Gottlieb HaberlandtDied 30 Jan 1945 at age 90 (born 28 Nov 1854).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. |
