Biology - Single MCQs (Page 192)

Sponsored
Q1911. .......... have a sucking and circular mouth without jawas?...Q1912. Vertebrates have ventral muscular heart with ________ chambers?...Q1913. Notochord is present only in larval tail ?...Q1914. The notochord is replaced by a ________ vertebral column in chordal-G?...Q1915. Into how many sub-phylum chordata is divided ?...Q1916. The body is cylindrical and composed of ________ in Hemichordata?...Q1917. Water vascular system which help in ________?...Q1918. An excretory system is absent in?...Q1919. In which of the following phyla, while the adult shows radial symmetry, the larv...Q1920. The mouth contains a file-like rasping organ for fooding, called ________ in Mol...