Which of the following factors is responsible for the formation of concentrated urine?

The roots that originate from the base of the stem are

True nucleus is absent in

Given below are two statements: Statement \(I\): The presence or absence of hymen is not a reliable indicator of virginity. Statement \(II\): The hymen is torn during the first coitus only. In the light of the above statements, choose the correct answer from the options given below :

What triggers activation of protoxin to active \(Bt\) toxin of Bacillus thuringiensis in boll worm?

The standard petal of a papilionaceous corolla is also called

Statements related to human Insulin are given below. Which statement(s) is/are correct about genetically engineered Insulin? \((a)\) Pro-hormone insulin contain extra stretch of C-peptide \((b)\) A-peptide and B-peptide chains of insulin were produced separately in E.coli, extracted and combined by creating disulphide bond between them. \((c)\) Insulin used for treating Diabetes was extracted from Cattles and Pigs. \((d)\) Pro-hormone Insulin needs to be processed for converting into a mature and functional hormone. \((e)\) Some patients develop allergic reactions to the foreign insulin. Choose the most appropriate answer from the options given below:

A wheatstone bridge is used to determine the value of unknown resistance \(X\) by adjusting the variable resistance \(Y\) as shown in the figure. For the most precise measurement of \(X\), the resistances \(P\) and \(Q\):

In water saturated air the mole fraction of water vapour is \(0.02\). If the total pressure of the saturated air is \(1.2\; atm\), the partial pressure of dry air is .....\(atm\)

A 2 amp current is flowing through two different small circular copper coils having radii ratio \(1: 2\). The ratio of their respective magnetic moments will be

What is the correct electronic configuration of the central atom in \(K _{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]\) based on crystal fleld theory?

In a gravitational field, the gravitational potential is given by, \(V =-\frac{ K }{ x }( J / kg )\). The gravitational field intensity at point \((2,0,3)\,m\) is

Industrial melanism is an example of