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Question

A basket of vegetables contains carrot, potato, radish and tomato. Which of them represent the correct homologous structures?


A

Carrot and potato

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B

Carrot and tomato

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C

Radish and carrot

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D

Radish and potato

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Solution

The correct option is C

Radish and carrot


The correct option is (c).

Explanation of the correct option:

  1. Homologous structures are those structures that are related to common ancestry.
  2. Such structures have a common structural plan and are adapted to suit different functional roles.
  3. Of the given options, potato is a storage stem, tomato is a fruit (in fact, it is a berry), radish and carrots are roots.
  4. Since both radish and carrots are roots, they have similar structural plans and are homologous.

Explanation of the incorrect options:

Option A:

Carrot is a root modification, whereas potato is a modification of stem, therefore, they are not homologous.

Option B:

Carrot is a root modification, whereas tomato is a fruit, therefore, they are not homologous.

Option D:

Radish is a root modification, whereas potato is a modification of stem, therefore, they are not homologous.

Final answer: A basket of vegetables contains carrot, potato, radish and tomato. Radish and carrot out of these represent the correct homologous structures.


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