Hormone

Auxin diagram showing how applying auxin to the top of a plant encourages vertical rather than lateral growth

How to take a hardwood cutting from a parent plant, four steps showing making the cutting, dipping it in hormone rooting powder, and establishing it in a new pot to grow

Albino axolotl Ambystoma mexicanum showing red gills

Axolotl Ambystoma mexicanum grey from, with water weed

African clawed toad Xenopus laevis