"Pedology" is the study of

Petroleum is derived from the words 'Petra' meaning rock and 'Oleum' meaning oil. The words 'Petra' and 'Oleum' are:

Which of the following books was written by Theophrastus?

In the given columns,column $I$ contains the terms and column $II$ contains their descriptions. Select the correct match from the options given below.

Column $I$	Column $II$
$A$. Growth	$I$. Production of offspring
$B$. Reproduction	$II$. Composed of one or more cells
$C$. Metabolism	$III$. Increase in mass and increase in number
$D$. Cellular organization	$IV$. Sum total of all chemical reactions

Why are jams and pickles immersed in concentrated sugar solution or oil?

Match Column $X$ with Column $Y$ and select the correct option:

Column $X$	Column $Y$
$(1)$ Population	$(P)$ Group of closely related species
$(2)$ Differentiation	$(Q)$ Result of metabolism
$(3)$ Family	$(R)$ Energy available for any system's work
$(4)$ Growth	$(S)$ Formed by individual organisms
$(5)$ Potential energy	$(T)$ Change in embryonic cells according to their specific functions