Classification helps in:

Clay soil is typically found in which of the following locations?

Which of the following pairs is correctly matched?

The study of which of the following can be used for the conservation of endangered and extinct organisms?

Tectonic is the study of

Match the names of branches of biology listed under column $I$ with the field of study given under column $II$; choose the answer which gives the correct combination of the alphabets of the two columns.
Column $I$ (Branch of biology) | Column $II$ (Field of study)
$A$ Palynology | $p$ Silkworms
$B$ Oncology | $q$ Pollens
$C$ Phycology | $r$ Cancer
$D$ Sericulture | $s$ Algae