State two postulates of Oparin and Haldane with reference to origin of life.
Oparin and Haldane proposed that life originated from pre-existing non-organic molecules and the diverse organic molecules were formed from these inorganic constituents by chemical evolution
Mention one application for each of the following : (a) Passive immunization (b) Antihistamine (c) Colostrum (d) Cytokinin-barrier
A pollen grain in angiosperm at the time of dehiscence from an anther could be 2-celled or 3-celled. Explain. How are the cells placed within the pollen grain when shed at a 2-celled stage ?
Name the type of cross that would help to find the genotype of a pea plant bearing violet flowers.
Differentiate between the genetic codes given below : (a) Unambiguous and Universal (b) Degenerate and Initiator
A herd of cattle is showing reduced fertility and productivity. Provide one reason and one suggestion to overcome this problem.
Name the microbes that help production of the following products commercially : (a) Statin (b) Citric acid (c) Penicillin (d) Butyric acid
An electrostatic precipitator in a thermal power plant is not able to generate high voltage of several thousands. Write the ecological implication because of it.
