Where Did Earthworms Originally Come From?

Where Did Earthworms Originally Come From? Origins. Most of the invasive earthworms are European or Asian and came over in soil during the eighteenth century as Europeans began settling the North American continent. The worms were originally transferred through the horticultural trade, probably in the soil bulbs of European plants being carried to the Americas.

Which Is Respiratory Organ Of Earthworm?

Which Is Respiratory Organ Of Earthworm? Earthworms do not have lungs. They breathe through their skin. Oxygen and carbon dioxide pass through the earthworm’s skin by diffusion. For diffusion to occur, the earthworm’s skin must be kept moist. Which organ is the respiratory organ? The main organ of the respiratory system is the lungs. Other

Which Flatworm Has Eyespots That Detect Light?

Which Flatworm Has Eyespots That Detect Light? Planarian What part of the flatworm can detect light? Flatworms have unusual ciliary cells outside their eyes which use a newly discovered protein to detect light. Eyes are elaborate organs that many animals use to detect light and see, but light can also be sensed in other, simpler

Do Earthworms Have Endoderm?

Do Earthworms Have Endoderm? Earthworms are triploblastic animals. In other terms, the blastula or earliest stage of embryonic development contains three primary germ layers Do worms have an endoderm? Worms are invertebrate animals with bilateral symmetry. … There are six features and systems that reveal an evolving complexity in the body structure of most worms: