Question

(a) Classify the following as homologus or analogus pairs:
(i) Broccoli and cabbage
(ii) Ginger and Raddish
(iii) Forelimbs of birds and lizard
(iv) Wings of a bat and wings of a bird
(b) State the main feature that categorises a given pair of organs as homologus or analogus.

Answer 1

Answer:

Explanation:

Homologous Organs -

Organs which look different and perform different functions, but have similar basic structure, similar topography and embryonic origin.

- wherein

These are called homologous organs. Eg: forelimbs of vertebrates like the seal, bat, bird wings, dragonfly, pterodactyl, eagle, humorous bat.

fig 4

 

 

 

Option 1)

Analogus organs

Incorrect option

Option 2)

Adaptive radiation

Incorrect option

Answer 2

Answer:

a)(i)Broccoli and Cabbage are homologus

(ii)Ginger and Raddish are analogus

(iii)Forelimbs of birds and lizards are homologus

(iv)Wings of a bat and wings of a bird are analogus

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