Iris
iris
Sclera does not belong because it is the tough, white outer layer of the eye, while choroid, vitreous humor, and retina are internal structures within the eye that play different roles in vision.
Lens does not belong, as it is not part of the structures involved in the formation or regulation of the aqueous humor within the eye like the ciliary body, iris, and suspensory ligaments.
catholic
Sucrose is not a monosaccharide as galactose.
Epithelium
Ribose does not belong in the grouping as it is a component of RNA, whereas DNA contains deoxyribose. Both DNA and RNA contain phosphate groups in their structure.
Lake Superior is on the North American continent. There is no sea that is called the Superior sea.
accommodation
Proprioceptors do not belong in the grouping, as they are sensory receptors responsible for detecting body position and movement, while rods, cones, and photoreceptors are sensory receptors responsible for detecting light and color in the eyes.
Hammer does not belong in the group as it is not an anatomical part of the ear like anvil, pinna, and stirrup are.
They all belong to the United Nations (UNO) but also a grouping of their own - BRIC (Brazil, Russia, India, China).