Question

From evolutionary point of view, the tendrils of Pea plant and Grape Vine are

• A. Homologous organs
• B. Analogous organs
• C. Connecting links
• D. Missing links

Answer 1

The correct option is B Analogous organs

• When we compare the anatomy of different animals, we find some similarities among them. For example, the forelimbs of different vertebrates are similar in origin and internal structure. All these indicate that there is a relationship among the organisms. These relationships can be studied under

1) Analogous organs

2) Homologous organs

3) Vestigial organs

4) Atavistic organs

5) Connecting links

• The organs which have dissimilar structure and origin but perform the same function are called analogous organs. Analogous organs suggest 'convergent evolution'.

e.g. wings of a butterfly and wings of a bird

• When different animals live in the same habitat, they tend to show similarity in body form, e.g. shark and whale have the same body form as both live in the aquatic environment. Earthworm and snake have the same body form as both live in burrows. This type of evolution is called 'convergent evolution'.
  

So, the correct option is 'Analogous organs'.