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Mosaic Endosperm - Variants of Endosperm
In some plants patches of two different colors appear in the tissues of the endosperm providing a mosaic design. In maize, red and white patches of tissues are sometimes seen in the grain. The occurrence of such endosperm has also been reported in Petunia, Lycopersicon and Acorus etc.
Several theories have been advanced to explain the development of mosaic endosperm but none of these has been cytologically demonstrated. The most appealing explanation for the development of such endosperm is said to be the aberrant behavior of the chromosomes during mitosis or somatic mutations.
Name a system that accomplishes that necessity and explain how that system accomplishes that necessity.
What is the acrosome of the sperm cell? How is it formed? The acrosome is a structure that has a great number of digestive enzymes, it is located in the anterior end of the spe
What is the swinging flashlight test used for It is done to check the relative afferent pupillary defect in an eye that is blind from optic nerve disease.
Q. Is the epithelium vascularized? How do oxygen and nutrients reach the epithelium? Why is this feature an important evolutionary acquisition? Epithelia are not vascularized c
charecterstic features of phylum protozoa.
Do enzymes act better under acid or basic pH? Most enzymes act in pH among 6 and 8, a range that corresponds to the general acidic level of cells and blood. There are enzymes,
When the standard free energy of a reaction is -5.7 kj/mol then at equilibrium a- there will be 10 times more products than reactants b-there will be 10000 times more product
WHAT ARE THE ADVANTAGES & THE DISADVANTAGES OF PROTOZOA?
Water Absorption Water status of a plant is determined by two major factors: i) water absorption and ii) water loss. We deal with water absorption in this section and water lo
Explain Objective Anti-arrhythmic pacemaker defibrillators? After reading this unit, you should be able to: 1 describes the classification of ant arrhythmic drugs; 2 understand
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