Imagine that scientists have discovered annelid life on a new planet. Remarkably, these worms are large in size, lack mouths, and appear to form symbioses with certain bacterial species. These worms most resemble on Earth.

These worms most resemble vestimentiferan worms on Earth

Explanation:

The Vestimentiferan worms are a very large marine tube worms. This are very long ones and can get to grow at least three meters and they tend to have a big diameter. They commonly inhabit deep-sea hydrothermal vents. They don't have a digestive system and they are classified as pogonophorans or a separate phylum or polychaetes.

explanation:

plz give me the characteristics.

white blood cells or wbc s are mainly 2 types-

1.agranulocytes

2.granulocytes

the monocytes or macrophages of agranulocytes , dendritic cells which are accessory leucocytes, and b cells which is one type of lymphocytes   identify the antigens present on the pathogen's surface. these three cells are called antigen presenting cells(apc) which are phagocytes and destroy the antigens by secreting antitoxins. besides this leukocyte is always plays vital role in the immunity of the body.