4 of the Biology glossary’s terms, each with the part of the syllabus where you first meet it.
Bright, conspicuous colours or patterns of a toxic or dangerous animal that predators learn to recognise and avoid; also called aposematism.
The potential energy of water per unit volume, relative to pure water at atmospheric pressure and 20 °C, which is given the value zero; symbol Ψ, usually measured in kPa.
A layer of wax secreted by the epidermis of a leaf that is almost impermeable to water, reducing water loss by evaporation.
The process of determining the complete base sequence of all the DNA in the genome of an organism.