Anthropods are very necessary part of the food chain.It is found in deep ocean. It is an invertebrae organism with jointed legs,exoskeleton and segmented body which is very much different from other common animals.
Mutation in homeotic genes (Hox) is responsible for the morphological evolution. A morphological transition in metazoans which is an example of anthropods , 400m years ago six-legged insects gets diverged from crustacean anthropods ancestors with numbers of limbs. These are the important and major characteristics shown by the anthropods during mutation.
Therefore the option below is correct.
The diversity is wide in anthropods body plans and it is attributed to gene mutation which develops and regulates mouthparts, limbs, wings.
other electron acceptors (like iron) are unlikely to be widely available and abundant 1/11 Question 7...