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Q. Phylogenetic systems of classification?
As already pointed out 'earlier that in Phylogenetic system, the plants are classified according to their evolutionary relationships. It is very difficult to claim that a phylogenetic system is perfect on the basis of evolutionary affinities due to incomplete fossils records and in such a situation the plants are classified on the basis of available data. The systems of classification by Engler and Prantl (1887-1915), Hutchinson (1926, 1934, 1969 and 1973) and by Takhtajan (1954, 1964, 1973, 1980) are Phylogenetic systems. We shall discuss these systems one by one in details.
Transfer RNA molecules are notable for having generally nucleotides shown in the figure such as 1-methylguanosine (m1G), pseudouridine (Ψ), dihydrouridine (D), inosine (I) and
Q. Global alteration of brain functioning - Sleep? Sleep involves a global alteration of brain functioning, and occupies one third of our lives, The transition from waking to
Nerve Cell - The Basic Unit The basic unit of the nervous system is the nerve cell or neuron. A neuron is to the nervous system what a brick is to the building. It has a cell
Which of the following are bound to hemoglobin when hemoglobin is in the R-state? Choose all that apply. 1. Fe2+ 2. CO2 3. 2,3-bisphosphoglycerate 4. Fe3+ 5. Oxygen
Q. Explain Treatment of Acute pericarditis? Symptomatic Treatment Pain relief can be achieved with indomethacin 25 to 50 mg. thrice daily; Ibuprofen 600 mg. thrice daily
Q. How many heart chambers does the amphibian heart have? The amphibian heart has three heart chambers such as one ventricle and two atria.
How does chemical adsorption of a gas on a solid vary with temperature? a) Mention the main reason for the anomalous behaviour of lithium in Group of the periodic table.
Spermatophores Many non-chordates do not release free sperms during copulation. They have a mechanism to bundle and enclose a number of sperms in a sheath usually made of gela
CHECKER BOARD (PUNNET'S SQUARE) METHOD 1. If the genotypes of the parents are known, the genotypes of their offspring can be easily predicted with the help of a chart c
Homozygous and Weterozygous In an individual two identical alleles may exist [or a given character and, hence, the individual is referred to as Homozygous (e.g. AA and aa). If
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