1. Weismann - Theory of continuity of germplasm

2. Pasteur -- Inheritance of acquired characters

3. de Vries -- Natural selection

4. Mendel -- Theory of pangenesis

1. analogous organs

2. homologous organs

3. vestigial organs

4. retrogressive evolution

Which one of the following pair of items correctly belongs to the category of organs mentioned against it?

1.	Thorn of Bougainvillea and tendrils of Cucurbita – Analogous organs
2.	Nictitating membrane and blind spot in the human eye – vestigial organs
3.	Nephridia of the earthworm and Malpighian tubules of cockroach - Excretory organs
4.	Wings of a honey bee and wings of crow - Homologous organs