An arthropod is an invertebrate, belongs to the phylum Arthropoda, which is largest phylum of the Animal Kingdom. Arthropods have organ system level of body organization and are bilaterally symmetrical, metamerically segmented body, triploblastic with true coelom. They possess pair of lateral jointed appendages and their body is covered with exoskeleton made of chitin.
An arthropod does not have notochord and endoskeleton. These two are features of a vertebrate.
By definition, an arthropod is an animal that is invertebrate and has an exoskeleton also known as an external skeleton. In addition they have a jointed appendages. Other characteristics include segmented bodies, open circulatory systems and bilateral symmetry. Based on this we can say that from the list given we can select "endoskeleton" "jointed appendages"
Explanation: When the cell is preparing to divide it will <u>replicate</u> its DNA so that both of the daughter cells will have a complete set of the DNA. It's like a book of instructions and the cell has to perfectly replicate it so that when it splits into two both of the new cells will have a perfectly made copy of it! Hope this helps :)
