Which of the following is not necessary for designation as a chordate?

I. A notochord

II. Vertebrae

III. A post-anal tail

IV. Gill arches

V. A dorsal, tubular nervous system

Which of the following is not necessary for designation as a chordate?

I. A notochord

II. Vertebrae

III. A post-anal tail

IV. Gill arches

V. A dorsal, tubular nervous system

Which of the following statements about chordates is true?

Which of the following statements about chordates is true?

Which of the following organelles is/are mainly present in animal cells?

I. Peroxisome

II. Centrioles

III. Flagella

Which of the following organelles is/are mainly present in animal cells?

I. Peroxisome

II. Centrioles

III. Flagella

Which of the following is false of the phylum chordata?

Which of the following is false of the phylum chordata?