During embryological development, the anus forms before the mouth in . View Available Hint(s)for Part A Molluscs Annelids and Molluscs Annelids Chordates Molluscs and Chordates

Acladogram is a branching diagram that represents suggested evolutionary relationships among organisms based on the presence of unique traits. a scientist discovers a new organism that lacks limbs and does not have a true backbone. the organism lays eggs to produce offspring and has a cartilage-like rod known as a notochord running along its dorsal surface. on the cladogram below, select the species to which the newly discovered organism is most closely related.

Transmission electron microscope are best for viewing a) microorganisms in pond water b) internal organs of a mouse c)internal structures of a cell d) surface features of a specimen

What are antigens and antibodies? how are they involved in the body’s response to incompatible blood?