Select the correct chronological order of human evolution.

Richmond-Lang effect is a consequence of which plant hormone?

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Read the following statements and select the correct option.

Statement I: Pollen mother cells (PMC) are the first male gametopbytic cells.

Statement II: Each pollen mother cell (PMC) produces two pollen grains.

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Zinc forms hcp structure. What is the number of tetrahedral voids formed in 0.3 mol of it?

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If two identical mercury drops are combined to form a single drop, then its temperature will ____________.

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Identify the function/s of integuments.

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Which of the following is the best layer?

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The unit of atomic mass, amu is replaced by u, here u stands for ______.

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Identify the characters that a cloning vector should possess.

i. Origin of replication (Ori)

ii. Ability to destroy the alien DNA

ii. Cloning site to link the alien DNA

iv. The tumour inducing plasmid Ti

v. Selectable marker

vi. Low molecular weight

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Gaseous CO and gaseous $H_2$ react with each other in presence of catalyst 'X' to form methane and water. 'X' is ____________.

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In an antibody molecule, the antigen-binding site is present on ____________.

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Answer