Question

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

• A. Grain
• B. Cob
• C. Fruit
• D. Egg

Hint:

Think about which whole structure contains a yolk as its central part.

Answer 1

The Correct Option is D

This analogy is about a part-to-whole relationship. The nucleus is the central, defining part found inside a cell. We need to find the whole structure that contains a "yolk" as its central part.

1. Grain: A grain, such as a wheat or rice grain, does not have a "yolk" inside it, so this pairing does not work.
2. Cob: A cob is the central core of a corn plant that holds the kernels, but it does not contain anything called a yolk, so this is unrelated.
3. Fruit: A fruit has a seed or a core, not a yolk, so this option does not fit the pattern either.
4. Egg: An egg contains a yolk as its central, defining part, in the same way a cell contains a nucleus as its central, defining part.

Only "egg" gives a whole structure whose central part is literally called a yolk, matching the nucleus-cell relationship exactly.

Let's summarize:

• A nucleus is the central part inside a cell.
• A yolk is the central part inside an egg.
• Grain, cob, and fruit do not contain a part called a yolk.

So the correct answer is "egg", option (d).