An organelle is a unique part of a cell that has a specific function. The term is a combination of the word organum, which means instrument or engine, and the suffix -elle, which means... Star Gazing
Female redback spider in the nest showing off her red back. The nest contains a few hundred eggs and is about 12 mm (1/2) in diameter. Female redback spider smiling to the camera, ready to protect her nest.
These quite large spiders have spines on their jaws that they use to dig burrows in the ground. They seal the opening with a hinged lid or trapdoor. Some types have a delicate silken trapdoor while others have a thick, tightly fitting lid made of earth and debris. The spiders wait in their burrows until they sense that a suitable prey is close by.