Since you provided no answer choices, I will assume the correct answer choice is ANCESTOR. A cladogram begins with a common ancestor of all the organisms represented above.
Answer;
-Chitin is a structural carbohydrate that forms their exoskeleton
Explanation;
-Chitin is the main component in the exoskeletons of arthropods and crustaceans and is also in the cell walls of fungi.
-It is a linear long chain polymer consisting of repeated units of N-acetyl-glucosamine.
-The main function of the chitin-containing exoskeleton is to keep the inner soft tissue safe from any sort of injury and also prevents the delicate tissues from drying (acts as a water tight barrier against dehydration).
The answer is 2.29 as the average velocity.
Fungi has a cell wall but no chloroplasts.
