Which of these animals has a ventral nerve cord:
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The hard Liithosphere was studded with volcanic eruptions pouring out hot lava. The Nitrogen and Carbon Atoms of atmosphere formed nitrides and Carbides respectively by reacting with metallic atoms of lava. The hot water vapours of atmosphere and carbides reacted to form Methane and water vapours and metallic nitrides reacted to form Ammonia. This statement regarding origin and evolution of organic compounds is:
(A) Correct (B) Partially wrong (C) Wrong (D) None of these
Amino acids, Sugards, Glycerol, Fatty acids, Nitrogen bases etc. formed in the primitive ocean survived because they were neither oxidized nor putrified. The reason were:
(A) Absence of oxygen in primitive ocean (B) Absence of Bacteria in the environment (C) Both (a) and (b) (D) None of these
During the course of time of origin of life, the nucleic acids were formed in the primitive ocean. Certain proteins like histones associated with these nucleic acids to form nucleoproteins which appeared as “Self-duplicating System” by virtue of this property the nucleic acid became capable of performing hereditary function. The statement according to your opinion is:
(A) TRUE (B) Wrong (C) Partially wrong (D) None of these
