THE CELL (āĻā§āώ) : Top MCQs
Q1. The basic structural and functional unit of life is: / āĻā§ā§ąāύ⧰ āĻŽā§āϞāĻŋāĻ āĻāĻ āύ āĻā§°ā§ āĻāĻžā§°ā§āϝ āĻāĻāĻ āĻāĻŋ ?
A) Nucleus B) Cell C) Tissue D) Organ
Ans: B) Cell
Explanation: Cell is the smallest unit that performs all life functions. : āĻā§āώ āĻšā§āĻā§ āĻā§ā§ąāύ⧰ āϏ⧰ā§āĻŦāύāĻŋāĻŽā§āύ āĻāĻāĻ āϝāĻŋāϝāĻŧā§ āϏāĻāϞ⧠āĻā§ā§ąāύā§āϝāĻŧ āĻāĻžā§°ā§āϝ āĻā§°ā§āĨ¤
Q2. The control center of the cell is: / āĻā§āώ⧰ āύāĻŋāϝāĻŧāύā§āϤā§ā§°āĻŖ āĻā§āύā§āĻĻā§ā§° āĻāĻŋ ?
A) Mitochondria B) Ribosome C) Nucleus D) Lysosome
Ans: C) Nucleus
Explanation: Nucleus controls all activities of the cell. āύāĻŋāĻāĻā§āϞāĻŋāϝāĻŧāĻžāĻ āĻā§āώ⧰ āϏāĻāϞ⧠āĻāĻžā§°ā§āϝ āύāĻŋāϝāĻŧāύā§āϤā§ā§°āĻŖ āĻā§°ā§āĨ¤
Q3. Plant cells have an additional structure called: / āĻāĻĻā§āĻāĻŋāĻĻ āĻā§āώāϤ āĻāĻŋ āĻŦā§āĻāĻŋ āĻĨāĻžāĻā§ ?
A) Cell wall B) Cilia C) Centrosome D) Flagella
Ans: A) Cell wall
Explanation: Cell wall gives strength and protection. : āĻā§āώ āĻĒā§ā§°āĻžāĻā§ā§°ā§ āĻļāĻā§āϤāĻŋ āĻā§°ā§ āϏā§ā§°āĻā§āώāĻž āĻĻāĻŋāϝāĻŧā§āĨ¤
Q4. "Powerhouse of the cell" is: / āĻā§āώ⧰ āĻļāĻā§āϤāĻŋāĻā§° āĻāĻŋ ?
A) Golgi body B) Mitochondria C) Ribosome D) Chloroplast
Ans: B) Mitochondria
Explanation: Produces energy (ATP). : āĻļāĻā§āϤāĻŋ (ATP) āĻā§āĻĒāύā§āύ āĻā§°ā§āĨ¤
Q5. Organelle for photosynthesis: / āĻĢāĻā§āϏāĻŋāύā§āĻĨā§āĻāĻŋāĻā§° āĻŦāĻžāĻŦā§ āĻ āĻāĻāĻžāĻŖā§ āĻāĻŋ ?
A) Nucleus B) Chloroplast C) Ribosome D) Vacuole
Ans: B) Chloroplast
Explanation: Contains chlorophyll for photosynthesis. : āĻā§āϞā§ā§°ā§āĻĢāĻŋāϞ āĻĨāĻžāĻā§, āϝāĻžā§° āĻŦāĻžāĻŦā§ āĻĢāĻā§āϏāĻŋāύā§āĻĨā§āĻāĻŋāĻ āĻšāϝāĻŧāĨ¤
Q6. Who discovered the cell ? / āĻā§āώ āĻā§āύ⧠āĻā§ąāĻŋāώā§āĻāĻžā§° āĻā§°āĻŋāĻāĻŋāϞ ?
A) Darwin B) Hooke C) Mendel D) Watson
Ans: B) Hooke
Explanation: Robert Hooke discovered cells in cork. : ā§°’āĻŦāĻžā§°ā§āĻ āĻšā§āĻā§ āĻā§°ā§āĻāϤ āĻā§āώ āĻĻā§āĻāĻŋāĻāĻŋāϞāĨ¤
Q7. Found only in animal cells: / āĻā§ā§ąāϞ āĻĒā§ā§°āĻžāĻŖā§ āĻā§āώāϤ āĻĒā§ā§ąāĻž āϝāĻžāϝāĻŧ ?
A) Cell wall B) Chloroplast C) Centriole D) Vacuole
Ans: C) Centriole
Explanation: Centrioles help in cell division. : āĻā§āĻŖā§āĻā§ā§°āĻŋāĻāϞ āĻā§āώ āĻŦāĻŋāĻāĻžāĻāύāϤ āϏāĻšāĻžāϝāĻŧ āĻā§°ā§āĨ¤
Q8. Jelly-like substance is: / āĻā§āϞāĻŋā§° āĻĻā§°ā§ āĻĒāĻĻāĻžā§°ā§āĻĨ āĻāĻŋ ?
A) Nucleus B) Cytoplasm C) Nucleolus D) Chromatin
Ans: B) Cytoplasm
Explanation: Cytoplasm holds organelles. : āĻāĻžāĻāĻā§āĻĒā§āϞāĻžāĻāĻŽā§ āϏāĻāϞ⧠āĻ
āĻāĻāĻžāĻŖā§ āϧ⧰āĻŋ ā§°āĻžāĻā§āĨ¤
Q9. Protein synthesis organelle: / āĻĒā§ā§°’āĻāĻŋāύ āϤā§āϝāĻŧāĻžā§° āĻā§°āĻž āĻ āĻāĻāĻžāĻŖā§ āĻāĻŋ ?
A) Ribosome B) Lysosome C) Golgi body D) Peroxisome
Ans: A) Ribosome
Explanation: Ribosomes make proteins. : ā§°āĻžāĻāĻŦ’āĻā§āĻŽā§ āĻĒā§ā§°’āĻāĻŋāύ āϤā§āϝāĻŧāĻžā§° āĻā§°ā§āĨ¤
Q10. Outermost layer of animal cell: / āĻĒā§ā§°āĻžāĻŖā§ āĻā§āώ⧰ āĻŦāĻžāĻšāĻŋā§°ā§° āϏā§āϤ⧰ āĻāĻŋ ?
A) Cell wall B) Cell membrane C) Capsule D) Cytoplasm
Ans: B) Cell membrane
Explanation: It controls entry and exit of substances. : āĻ āĻĒāĻĻāĻžā§°ā§āĻĨā§° āĻĒā§ā§°ā§ąā§āĻļ āĻā§°ā§ āĻŦāĻšāĻŋā§°ā§āĻāĻŽāύ āύāĻŋāϝāĻŧāύā§āϤā§ā§°āĻŖ āĻā§°ā§āĨ¤
Quick Revision Trick
Cell = basic unit : āĻā§āώ : āĻŽā§āϞāĻŋāĻ āĻāĻāĻ
Nucleus = control center : āύāĻŋāĻāĻā§āϞāĻŋāϝāĻŧāĻžāĻ = āύāĻŋāϝāĻŧāύā§āϤā§ā§°āĻŖ
Mitochondria = energy : āĻŽāĻžāĻāĻ’āĻāĻŖā§āĻĄā§ā§°āĻŋāϝāĻŧāĻž = āĻļāĻā§āϤāĻŋ
Ribosome = protein : ā§°āĻžāĻāĻŦ’āĻā§āĻŽ = āĻĒā§ā§°’āĻāĻŋāύ
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Q1. Plasma membrane is: / āĻā§āώ āĻāĻŋāϞā§āϞ⧠āĻāĻŋ ?
A) Permeable B) Impermeable C) Selectively permeable D) Rigid
Ans: C
Explanation: Allows selective entry. : āύāĻŋāϰā§āĻŦāĻžāĻāĻŋāϤ āĻĒāĻĻāĻžā§°ā§āĻĨāĻšā§ āϏā§āĻŽāĻžāϝāĻŧāĨ¤
Q2. Prokaryotic cells lack: / āĻĒā§ā§°’āĻāĻžā§°āĻŋāϝāĻŧ’āĻāĻŋāĻ āĻā§āώāϤ āύāĻžāĻ
A) Cytoplasm B) Membrane C) Nucleus D) Ribosome
Ans: C
Explanation: No true nucleus. : āĻŦāĻžāϏā§āĻ¤ā§ą āύāĻŋāĻāĻā§āϞāĻŋāϝāĻŧāĻžāĻ āύāĻžāĻāĨ¤
Q3. Organelle for energy: / āĻļāĻā§āϤāĻŋā§° āĻ āĻāĻāĻžāĻŖā§
A) Ribosome B) Mitochondria C) Golgi D) Vacuole
Ans: B
Q4. “Suicide bag” is: / āĻāϤā§āĻŽāĻšāϤā§āϝāĻž āĻŦā§āĻ
A) Lysosome B) Nucleus C) ER D) Golgi
Ans: A
Q5. DNA present in: / DNA āĻ’āϤ āĻĨāĻžāĻā§ ?
A) Cytoplasm B) Nucleus C) Ribosome D) Vacuole
Ans: B
Q6. Chloroplast found in: / āĻā§āϞā§ā§°ā§āĻĒā§āϞāĻžāώā§āĻ āĻ’āϤ āĻĨāĻžāĻā§ ?
A) Animal cell B) Plant cell C) Both D) None
Ans: B
Q7. Ribosome function: / ā§°āĻžāĻāĻŦ’āĻā§āĻŽā§° āĻāĻžāĻŽ
A) Respiration B) Protein synthesis C) Storage D) Control
Ans: B
Q8. Vacuole is large in: / āĻĄāĻžāĻā§° āĻā§āĻā§ā§ą’āϞ āĻ’āϤ ?
A) Animal cell B) Plant cell C) Both D) None
Ans: B
Q9. Cell wall made of: / āĻā§āώ āĻĒā§ā§°āĻžāĻā§ā§° āĻāĻŋāĻšā§ā§°ā§ āĻāĻ āĻŋāϤ ?
A) Protein B) Lipid C) Cellulose D) Fat
Ans: C
Q10. Golgi body helps in: / āĻ’āϞāĻāĻŋ āĻŦāĻĄāĻŋā§° āĻāĻžāĻŽ
A) Digestion B) Transport C) Control D) Respiration
Ans: B
Part 2: Assertion–Reason
Q11. A: Mitochondria produce energy R: They perform respiration
Ans: Both true
Explanation: Respiration releases energy. : āĻļā§āĻŦāĻžāϏ-āĻĒā§ā§°āĻļā§āĻŦāĻžāϏ⧠āĻļāĻā§āϤāĻŋ āĻā§āĻĒāύā§āύ āĻā§°ā§āĨ¤
Q12. A: Ribosome makes protein R: It contains RNA
Ans: Both true
Q13. A: Plant cells have vacuole, R: It stores water
Ans: Both true
Q14. A: Animal cell has cell wall, R: It gives protection
Ans: A false, R true
Q15. A: Nucleus controls cell, R: It contains DNA
Ans: Both true
Diagram-Based
Q16. Identify powerhouse organelle
Ans: Mitochondria
Explanation: Produces energy. : āĻļāĻā§āϤāĻŋ āĻā§āĻĒāύā§āύ āĻā§°ā§āĨ¤
Q17. Identify control center
Ans: Nucleus
Explanation: Controls activities. : āϏāĻāϞ⧠āĻāĻžāĻŽ āύāĻŋāϝāĻŧāύā§āϤā§ā§°āĻŖ āĻā§°ā§āĨ¤
Q18. Identify plant-only structure
Ans: Cell wall
Explanation: Provides strength. : āĻļāĻā§āϤāĻŋ āĻĻāĻŋāϝāĻŧā§āĨ¤
Q19. Identify protein factory
Ans: Ribosome
Explanation: Makes protein. : āĻĒā§ā§°’āĻāĻŋāύ āϤā§āϝāĻŧāĻžā§° āĻā§°ā§āĨ¤
Q20. Identify photosynthesis organelle
Ans: Chloroplast
Explanation: Makes food using sunlight. : āϏā§ā§°ā§āϝ⧰ āĻĒā§āĻšā§°ā§ āĻāĻžāĻĻā§āϝ āϤā§āϝāĻŧāĻžā§° āĻā§°ā§āĨ¤
Final Revision
Nucleus = control : āύāĻŋāĻāĻā§āϞāĻŋāϝāĻŧāĻžāĻ = āύāĻŋāϝāĻŧāύā§āϤā§ā§°āĻŖ
Mitochondria = energy : āĻŽāĻžāĻāĻ’āĻāĻŖā§āĻĄā§ā§°āĻŋāϝāĻŧāĻž = āĻļāĻā§āϤāĻŋ
Ribosome = protein : ā§°āĻžāĻāĻŦ’āĻā§āĻŽ = āĻĒā§ā§°’āĻāĻŋāύ