NEET · Biology · STD 11 - 8. Cell the unit of life

True nucleus is absent in

A Vaucheria
B Volvox
C Anabaena
D Mucor.

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Answer & Solution

Correct Answer

(C) Anabaena

Step-by-step Solution

Detailed explanation

(c) : Anabaena is a prokaryotic organism. It is a cyanobacteria (blue green algae) which belongs to Kingdom Monera. Like all other prokaryotes, it lacks a true nucleus and other cell organelles.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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Match List \(I\) with List \(II\)

List \(I\)	List \(II\)
\(A\)Citric acid cycle	\(I\) Cytoplasm
\(B\) Glycolysis	\(II\) Mitochondrial matrix
\(C\) Electron transport system	\(III\) Intermembrane space of mitochondria
\(D\) Proton gradient	\(IV\) Inner mitochondrial membrane

Choose the correct answer from the options given below:

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