Eggs that come from earthworms are wrapped in a protective cocoon. The eggs are sequestered in the ground for protection. Earthworms are able to hatch in 14 days in warm weather but take up to 60 days to hatch in cold we... More »

The fern life cycle and moss life cycle are similar in that they have alternation between sporophyte and gametophyte stages and that both rely on layers of water so that their sperm can swim from one gametophyte to the e... More »

A zebra spider goes through embryonic, larval, nymph and adult stages. A zebra spider begins in a fertilized egg sac, usually hidden underneath a rock. Upon hatching, the larva is too small to have any identifiable featu... More » Pets & Animals Bugs Spiders

A worm has a simple life cycle, as it starts inside an egg cocoon, hatches into a small worm, grows larger and becomes sexually mature, mates with another worm and creates egg cocoons. The cycle then repeats itself with ... More »

Earthworms have bristles called setae on each segment of their body, that move in and out to grip the ground and push them along. The bristles work as anchors when the worm moves through underground tunnels or on the sur... More »

An earthworm has five aortic arches, each functioning similarly to a heart. The aortic arches have the purpose of pumping blood through the dorsal and ventral blood vessels. The dorsal blood vessel carries blood to the f... More »

The adaptations the earthworm has made to its underground life include lacking eyes and ears that can be clogged with soil. It also has a long, tube-like, segmented body which helps it push through the soil. More »