Anatomy

The edible part of the litchi fruit is the aril, which is the fleshy, juicy covering around the seed.
- Mesocarp is the middle layer of the fruit's pericarp.
- Exocarp is the outer skin of the fruit.
- Cotyledon is part of the seed embryo, not edible flesh.

The male genital apertures of the earthworm are located in the 18th segment. These openings are part of the reproductive system and are involved in sperm transfer during copulation.