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Functions of Synergids
Ultra structurally the structure and concentration of cell organelles reveals that synergids are metabolically active. The following Wee functions are attributed to synergids.
1. Directing of pollen tube growth by secreting some chemotropically active substances.
2. The degenerating synergids form the site for pollen tube discharge in the embryo sac.
3. The filiform apparatus may aid in the absorption and transportation of materials into the embryo sac from the nucellus.
Molluscus - Hormones in Growth and Reproduction We know quite well about the endocrine mechanism of growth and reproduction in the freshwater snail Lymnaea stagnalis. This is
What are the six criteria used to build a complete evolutionary branch of vertebrates? Dichotomy in each of the six following criteria builds the vertebrate evolutionary branch
Define the Petrifilm (dry film) Method? An alternative method to the conventional SPC is a Petrifilm (dry film) method. It is a non-petri dish plating system where a layer of n
Q. Which are the three hormones that participate in the regulation of the renal function? Antidiuretic hormone or ADH or vasopressin, atrial natriuretic factor (or ANF) and ald
Explain the term Rastelli operations ? This is the operation of choice for transposition with VSD and left ventricular outflow obstruction. The principle of this operation is:
how?
explain abt invivo gene therapy ..
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Principle for Estimation of Percentage of Reducing and Total Sugar by Fehling Soxhlet Method? Reducing sugars are those which have free sugar groups and hence may be estimated
Define Deuterostomes in animal kingdom? Coelomate animals are thought to have separated into two divergent lines of evolution in terms of the way embryos develop. In the embryo
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