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α- amylase activity by GA3 - Dormancy
Of the enzymes required for the digestion of starch α-amylase appears immediately after the start of germination. It was found that if the embryo was removed no a-amylase appeared, however, if very low concentations of GA3 were added to the seed the production of digestive enzyme proceeds. The work over the last 30 years proved the fact that GA3 initiates action at transcriptional and translational levels. Not only activation of pre-existing m-RNAs coding for a-amylase but synthesis of m-RNA also takes place after the exposure of seeds to GA3.
Cytokinins and Cell Division
Cell division involves synthesis of new DNA, RNA and a host of cell proteins in interphase (cell cycle S1 and S2). All these events are promoted by cytokinins. Cell division also means synthesis of a number of enzymes that are needed for the synthesis of cell wall and middle lamella.
Clonal Propagation Most cultivars of ornamental and fruit species and forest trees are highly heterozygous. Consequently, their seed progeny is not true-to-type. To preserve
What is the best microscope to get a detailed view of the parts inside of a preserved plant cell?
Evolutionary Classification Evolutionary classification combines aspects of both phenetic and cladistic systematic. Evolutionary taxonomists attempt to show in their classifica
Q. What is the normal duration of the menstrual cycle? How does the calendar contraceptive method work? The normal duration of the menstrual cycle is 28 days but it can vary am
Cellulose Cellulose is found in plants as microfibrils (2-20 nm diameter and 100-40,000 nm long). These form the structurally strong framework in the cell walls. Cellulose is
Formation of New Membranes Divisions of the egg or blastomeres raise the total surface area of the two daughter cells to be covered via membrane at every cleavage. The parent
Define Effect of Enery on quality and quantity of human milk? Energy: In case of chronic under nutrition, an association between postpartum weight loss and lower energy transfe
Zoochory - Dispersal of Seeds Some fruits are eaten by animals and the seeds are passed out with the excreta (endozoochory). Plums, Lantana, grapes, figs and guava are example
Difference between Sympathetic and Parasympathetic Nervous System - S.NO . SYM P A THETIC PERASYM P A THETIC 1.
Conduction in Myelinated Axons The myelin sheath provides insulation for the axon preventing movements of Na + and K + through the membrane. Therefore, if this myelin sheath
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