🧪 MCQs on Eukaryotic Cell: Nucleus, Cytoskeleton & Organelles | NEET Botany

📘 Introduction

The eukaryotic cell is a key topic in NEET Biology. It includes complex organelles like the nucleus, cytoskeleton, mitochondria, Golgi apparatus, and more. Practicing MCQs from this topic helps students gain clarity and confidence for NEET 2025.

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🧬 MCQs on Nucleus

1. The nucleus is separated from the cytoplasm by:

A. Plasma membrane

B. Nuclear pore

C. Nuclear envelope

D. Endoplasmic reticulum

✅ Answer: C. Nuclear envelope

2. Which of the following is not a component of the nucleus?

A. Nucleolus

B. Chromatin

C. Centrosome

D. Nuclear envelope

✅ Answer: C. Centrosome

3. The darkly stained structure inside the nucleus is called:

A. Nucleolus

B. Lysosome

C. Mitochondrion

D. Ribosome

✅ Answer: A. Nucleolus

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⚙️ MCQs on Cytoskeleton

4. Cytoskeleton is made up of:

A. Actin filaments

B. Microtubules

C. Intermediate filaments

D. All of the above

✅ Answer: D. All of the above

5. Which cytoskeletal component is primarily responsible for cell division (spindle formation)?

A. Microfilaments

B. Intermediate filaments

C. Microtubules

D. Ribosomes

✅ Answer: C. Microtubules

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🧫 MCQs on Organelles

6. Mitochondria are known as:

A. Powerhouse of the cell

B. Kitchen of the cell

C. Suicidal bags

D. Control center of the cell

✅ Answer: A. Powerhouse of the cell

7. Which organelle is responsible for packaging and secretion?

A. ER

B. Golgi apparatus

C. Ribosome

D. Nucleus

✅ Answer: B. Golgi apparatus

8. Ribosomes are found:

A. Only in nucleus

B. Only in cytoplasm

C. Free in cytoplasm and on RER

D. Only in mitochondria

✅ Answer: C. Free in cytoplasm and on RER