Help with bio?

1.a sheet of muscle called the diaphragm is found in


a.birds


b.mammals


c.reptiles


d.A and B


e.B and C


i think its E





2. Differentiation of teeth is greatest in


a.sharks


b.mammals


c.amphibians


d.reptiles


e.bony fishes


uhh...no clue





3.among the invertebrates, arthropods are unique in possessing


a.a notochord


b.jointed appendages


c.open circulation


d.segmented bodies


e.ventral nerve cords


i think its c





4.which of the following five structures would you be more likely to find in an organism showing radial symmetry?


a.a head


b. a well developed central nervous system


c.tube feet


d.fins


e. a muscular tail





i think its E but i have no clue to be honest.





you dont have to answer all just tell me the ones you know please this is hard as heck lol and im researching all over the internet, thanks in advance

Help with bio?
1.a sheet of muscle called the diaphragm is found in


a.birds


b.mammals


c.reptiles


d.A and B


e.B and C


i think its d , because reptiles don't really breathe and stuff





2. Differentiation of teeth is greatest in


a.sharks


b.mammals


c.amphibians


d.reptiles


e.bony fishes





a. sharks i think because they got them really big teeth, or maybe it's bony fishes, i'm not sure





3.among the invertebrates, arthropods are unique in possessing


a.a notochord


b.jointed appendages


c.open circulation


d.segmented bodies


e.ventral nerve cords





i think d. because that's what anthropod means, it means segmented parts








4.which of the following five structures would you be more likely to find in an organism showing radial symmetry?


a.a head


b. a well developed central nervous system


c.tube feet


d.fins


e. a muscular tail





tube feet because , radial symettry is like symmetry from the center and "radiating" outwards, and so tube feet is like a little sucking balls which has radial symetry



company