<p><strong>Fig. 1.2.</strong>&nbsp;(<strong>C</strong>) A “living stone” or pebble plant (<em>Lithops optica</em>) is seen among pebbles.</p>

Fig. 1.2. (C) A “living stone” or pebble plant (Lithops optica) is seen among pebbles.

Image courtesy of Abu Shawka, Wikimedia Commons