Glossary:
Mimosa: a plant of a genus that includes the sensitive plant.
Morphology: the branch of biology that deals with the form of living organisms, and with relationships between their structures. from Greek morphē ‘form’ + -logy ‘denoting a subject of study’.
Compound leaves: is a leaf whose leaflets are attached to the middle vein but have their own stalks.
Pinnate leaves: a leaf resembling a feather; having the leaflets on each side of a common axis.
Rachis: the midrib of a compound leaf.
Leaflet: each of the leaflike structures that together make up a compound leaf.
Pulvinus: an enlarged section at the base of a leaf stalk in some plants, which is subject to changes of rigidity leading to movements of the leaf or leaflet.
Droop: cause to bend or hang downwards.