D is probably right cos you are comparing data
        
             
        
        
        
Urochordata is another invertebrate other than hagfish.
        
             
        
        
        
True because the chromosomes needs to be split on both sides
        
                    
             
        
        
        
excretory system: removes waste from blood.
respiratory system: obtains oxygen so the energy in the nutrients can be extracted.
circulatory system: transports nutrients from small intestine to the othet tissues.
nervous system: regulates and controls digestive functioning.
( Am not completly sure, but i think this is the answer)
 
        
             
        
        
        
Sour receptors occur primarily along the sides of the tongue and are stimulated mainly by acids. Salt receptors are most common in the tip and upper front portion of the tongue. They are stimulated mainly by inorganic salts. Bitter receptors are located toward the back of the tongue 
hopefully this helps but i could be really wrong lol