government section 8

The nucleus of the megaspore undergoes three successive mitotic divisions forming eight nuclei. The megaspore enlarges into an oval shaped structure called the embryo sac . The eight nuclei of the embryo sac arrange themselves in 3 groups. (A I), (A - D), stages in the developme..

What is the drift velocity of electrons in a copper conductor having a cross-sectional area of 5 x 10 - 6 m 2 if the current is 10A? Assume that there are 8 x 10 2 8 electrons/m 3 ..

Under certain experimental conditions, a beam of particles (for example, electrons ) can exhibit wavelike properties. Such matter waves are governed by the laws of quantum physics. The wavelength is inversely proportional to the momentum of the particles. These are also known as de Brogl..

Primarily surface tension of a liquid is governed by the strength of intermolecular attractive forces. Therefore, the magnitude of surface tension is a measure of intermolecular attractive forces. For instance the order of strength between inter molecular forces as well as the surface te..

The respiratory system in insects is called the tracheal system. It involves the diffusion of oxygen directly from the atmosphere into the air-filled tubes. Thus, the diffusion is through air and hence, is more efficient than the diffusion through water (300,000 times more) or tissues (1,000,000 ti..

Globally sea levels have risen 4-8 inches over the last century. The high temperatures have already started melting polar ice caps sea icebergs and glaciers. This has released enormous amount of water. Warmer temperatures also heat water and make it expand; thus ocean levels need more sp..

. Two male genital pores are present on the ventral surface of the 18 t h segment, one on each side. Four pairs of Spermathecal openings are present ventrally in the grooves between segments 5 and 6, 6 and 7, 7 and 8 and 8 and 9. A large number of nephridiopores are found scatte..

1) Project Tiger 50 years ago, there were over 40,000 tigers in India. But poaching and destruction of habitat had reduced the number to just 1827 by 1972, making them an endangered species. To protect the tigers from extinction, the Government of India started "Project Tiger" on April 1..

>The dangerous effects of pollution are governed by factors like concentration of pollutant exposure to pollutant area / section of population affected type of pollutant and dangers caused by them process of degradation / metabolism of pollutants Each of the above factors ultima..

Over the past 100 years, sea level has increases by 18 cm. Inter government a panel in climate change has suggested that sea level would rise upto 90cm by 2100. Large scale flooding of California in 1999 and parts of western coast in India in the last 5-8 years, are testimonies..