Chapter:

Organisms-and-Populations

Column IColumn II
(A) Tendril of Passiflora and thorn of Bougainvillea(p) Fossil invertibrates
(B) Eyes in insects and octopus(q) Homologous organs
(C) Nictitating membrane and vermiform appendix in man(r) Analogous organs
(D) Ammonite and Trilobite(s) Vestigial organs