Question:easy

Complete the analogy by choosing the option that best fits.
Nucleus : Cell :: Yolk : ?

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Think about which whole structure contains a yolk as its central part.
Updated On: Jul 21, 2026
  • Grain
  • Cob
  • Fruit
  • Egg
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The Correct Option is D

Solution and Explanation

Step 1: Understanding the Concept:
This question is a part-to-whole analogy. The nucleus sits at the center of a cell and controls its activities, making it the defining central part of the cell.

Step 2: Key Formula or Approach:
Identify the whole object among the choices whose central part carries the exact name "yolk", since the analogy depends on that specific structural label rather than a loose similarity.

Step 3: Detailed Explanation:
Grain refers to a small dry seed of a cereal plant, and it has no component called a yolk.
A cob is the woody core of a corn plant that holds the kernels, again with no yolk inside it.
A fruit typically has a seed or core at its center, not a yolk, so this option is also incorrect.
An egg has a clear central part known specifically as the yolk, which is the yellow, nutrient-rich portion surrounded by the egg white.

Step 4: Final Answer:
Since the yolk is the named central part of an egg, just as the nucleus is the named central part of a cell, the answer is "egg", option (d).
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