Right: Vaginal lubrication sometimes becomes visible after sexual arousal. Vaginal lubrication is a naturally produced fluid that lubricates a woman's vagina. Vaginal lubrication is always present, but production increases significantly near ovulation and during sexual arousal in anticipation of sexual intercourse.
Marie Iannotti. Definition: A basal leaf is one that grows from the lowest part of the stem. Basal, in general, refers to the base of a structure. Many perennial plants are trimmed back to new basal foliage once the older foliage starts to look tired and worn.
Compound leaves look like a bunch of leaves that all come from the same stem. However, this stem is really a petiole, and the individual blades connected to it are called leaflets (little leaves).An ash leaf is an example of a compound leaf: In addition to simple and compound leaves, there are some obvious differences in leaf shape.he arrangement of a plantâs leaves on the stem is called phyllotaxy. Though most leaves perform photosynthesis, some plants have modified their leaves to do other things. Cacti are a great example of this: those prickly spines are actually leaves. The green part of a cactus is actually a photosynthetic stem.