Question

Which of the following is a modification of root and also represents homologous organs?
A.Sweet potato and potato
B.Potato and ginger
C.Radish and carrot
D.Sweet potato and carrot

Answer 1

Hint: Homologous organs are the organs that have a similar structure but different functions. Homologous organs belong to two different species that resemble their structure but not in function. For example – forelimbs of man, frog and flippers of whale.

Complete answer:
Out of the sweet potato, potato, ginger, radish and carrot, radish and carrot are the homologous organs.
1.Radish and carrot both are the modification of roots which are modified for storing food.
2.Radish is an edible root vegetable which belongs to the family Brassicaceae. Radishes are mostly eaten raw as a crunchy salad. There are numerous varieties of radish that vary in size, colour, and flavor.

Carrot is also an edible root vegetable. The carrot belongs to the family Apiaceae.

Additional information:
1.Sweet potato and potato are the analogous organs.
2.Sweet potato is the modification of root and potato is the modification of stem.
3.Sweet potato and potato both have the same function of storing food in the form of the starch but they have different origins as potato is the modification of stem and sweet potato is the modification of root.

4.Ginger is the modified underground stem.
5.Ginger is distinguished from the root because it has nodes and internodes.

Hence the correct answer is OPTION(D)

Note: Analogous organs are the organs of two different species that have different structures but they have the same function. They are the opposite to the homologous organs. Examples of analogous organs include wings of insects, bats and birds.