List I | List II | ||
A | Pleurobrachia | I | Mollusca |
B | Radula | II | Ctenophora |
C | Stomochord | III | Osteichthyes |
D | Air bladder | IV | Hemichordata |
A. Pleurobrachia is a member of the phylum Ctenophora (II).
B. Radula is found in organisms from the phylum Mollusca (I).
C. Stomochord is a characteristic feature of organisms from the phylum Hemichordata (IV).
D. Air bladder is found in fish from the phylum Osteichthyes (III).
Thus, the correct answer is (2) A-II, B-I, C-IV, D-III.
List I | List II | ||
A | Down’s syndrome | I | 11th chormosome |
B | α-Thalassemia | II | ‘X’ chromosome |
C | β-Thalassemia | III | 21st chromosome |
D | Klinefelter’s syndrome | IV | 16th chromosome |
The velocity (v) - time (t) plot of the motion of a body is shown below :
The acceleration (a) - time(t) graph that best suits this motion is :