Arthropods are an incredibly successful group of animals. This is thought to be primarily due to the diversity in feeding appendages found in groups of arthropods. How did the diversity in feeding appendages arise? modification of walking appendages into feeding appendages in anterior-most segments modification of patterns of metamorphosis to allow development of feeding appendages modification of portions of the exoskeleton to make room for feeding appendages modification of feeding appendages into walking appendages in body segments behind the head

Walking appendages into feeding ones

Explanation:

The successful modification of those feeding appendages arose probably on a basal extinct arthropod like a crustacean organism and the source of modification are part of a gene group called hox genes. Modifications like positive mutations, which are modifications that cause an evolutionary advantage, on those group of genes led to diversity of those appendages.

blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.