Would you expect to see more biodiversity in a phyla or among members of a class?

Phyla. There will be more biodiversity in Phyla than class.

Explanation:

Phylum consist of more numbers of organisms species than class. Base on taxonomical classification, phylum comes before class and phylum consist of different class of organisms. There will be more biodiversity in Phyla because it consist of more different species of organisms than class.

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.