Previous year MCQs

General science UPPSC 2019 GS-I
Question

Which of the following organism has "White Blood" ?

Answer & Solution

Answer: (Detailed Solution Below)

Option B: Cockroach

Detailed Solution:

The correct answer is “Cockroach”.
Cockroach has "white blood".

While it's not technically white, the blood of cockroaches is a pale, yellowish-green color due to the absence of red blood cells and hemoglobin. Instead, they rely on a different respiratory pigment called hemocyanin, which is blue when oxygenated but colorless when deoxygenated. This gives their blood a pale appearance.

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