+20 Questions on Chloroplast
Multiple choice questions on Chloroplast, each numbered and followed by an answer key at the end.
Multiple Choice Questions: Chloroplast
1. What is the main function of the chloroplast?
A) Protein synthesis
B) Cellular respiration
C) Photosynthesis
D) Waste removal
2. Which pigment is found in chloroplasts and essential for photosynthesis?
A) Hemoglobin
B) Melanin
C) Chlorophyll
D) Keratin
3. Chloroplasts are found in which type of cells?
A) Animal cells
B) Plant and algae cells
C) Fungi cells
D) All eukaryotic cells
4. What is the name of the internal membrane structures where light reactions occur?
A) Mitochondria
B) Thylakoids
C) Ribosomes
D) Lysosomes
5. What is the fluid surrounding the thylakoids inside the chloroplast?
A) Cytoplasm
B) Matrix
C) Stroma
D) Plasma
6. Chloroplasts have how many membranes?
A) One
B) Two
C) Three
D) Four
7. Which of the following organisms does not contain chloroplasts?
A) Oak tree
B) Green algae
C) Fungi
D) Grass
8. Which gas is consumed during photosynthesis in chloroplasts?
A) Oxygen
B) Carbon dioxide
C) Nitrogen
D) Methane
9. Which gas is produced by the chloroplast during photosynthesis?
A) Carbon dioxide
B) Hydrogen
C) Oxygen
D) Nitrogen
10. Chloroplasts are believed to have originated from:
A) Endoplasmic reticulum
B) A fusion of mitochondria
C) Endosymbiotic cyanobacteria
D) Mutated lysosomes
11. What type of energy is converted by chloroplasts into chemical energy?
A) Heat
B) Solar/light
C) Sound
D) Mechanical
12. Which part of the chloroplast contains chlorophyll?
A) Stroma
B) Thylakoid membrane
C) Outer membrane
D) Ribosome
13. Chloroplast DNA is most similar to:
A) Human nuclear DNA
B) Bacterial DNA
C) Viral DNA
D) Mitochondrial DNA
14. The stack of thylakoids is known as a:
A) Grana
B) Stroma
C) Matrix
D) Capsule
15. What is the primary sugar produced by chloroplasts during photosynthesis?
A) Sucrose
B) Fructose
C) Glucose
D) Lactose
16. Chloroplasts contain their own:
A) DNA and ribosomes
B) Lysosomes
C) Vacuoles
D) Endoplasmic reticulum
17. Chloroplasts are classified as what type of organelle?
A) Energy-releasing
B) Digestive
C) Energy-storing
D) Contractile
18. Which stage of photosynthesis occurs in the stroma?
A) Light-dependent reactions
B) Glycolysis
C) Calvin cycle (light-independent reactions)
D) Electron transport chain
19. Which molecule is fixed in the Calvin cycle of photosynthesis?
A) Oxygen
B) Nitrogen
C) Carbon dioxide
D) ATP
20. Which of these is NOT found in the chloroplast?
A) Thylakoids
B) Grana
C) Matrix
D) Stroma
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Answer Key
1. C – Photosynthesis
2. C – Chlorophyll
3. B – Plant and algae cells
4. B – Thylakoids
5. C – Stroma
6. B – Two
7. C – Fungi
8. B – Carbon dioxide
9. C – Oxygen
10. C – Endosymbiotic cyanobacteria
11. B – Solar/light
12. B – Thylakoid membrane
13. B – Bacterial DNA
14. A – Grana
15. C – Glucose
16. A – DNA and ribosomes
17. C – Energy-storing
18. C – Calvin cycle (light-independent reactions)
19. C – Carbon dioxide
20. C – Matrix
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