Biology Multiple Choice Questions and Answers for Different Competitive Exams

Multiple Choice Questions on Plastids

MCQ on Plastids
1. Which of the following is a double membrane bound organelle
a) mitochondria
b) chloroplast
c) nucleus
d) all of these

2. Plastids are absent in
a) animals and plants
b) fungi and animals
c) animals, bacterium and fungi
d) none of these

3. All are colourless plastids (leucoplasts) except
a) elaioplast
b) amyloplast
c) proteinoplast
d) rhodoplast

4. Which of the following statements are incorrect regarding leucoplasts
a) leucoplasts contain thylakoids and photosynthetic pigments
b) Elaioplasts store lipids
c) proteinoplats store proteins
d) amyloplasts store starch
5. The organelle responsible for life on this planet is
a) mitochondria
b) chloroplast
c) nucleus
d) ribosomes

6. Which of the statements are true regarding chloroplast
Chloroplast
a) It is a double membrane bound organelle
b) Chloroplasts are site of photosynthesis
c) Chloroplasts are responsible for the synthesis of carbohydrates
d) all of these

7. Chloroplast is similar to mitochondria in having a
a) double layered membrane
b) Circular DNA
c) 70S ribosomes
d) all of these

8. The site of light reaction is
a) grana
b) stroma
c) thylakoid lumen
d) outer membrane

9. Photolysis or water splitting complex is present in
a) grana
b) stroma
c) thylakoid lumen
d) outer membrane

10. Calvin cycle or dark reaction occurs in the
a) grana
b) stroma
c) thylakoid lumen
d) outer membrane

11. Which of the following pigment is most abundant in green plants
a) chlorophyll a
b) chlorophyll b
c) carotene
d) xanthophyll

12. Photosynthetic Pigments are located on the
a) Inner membrane
b) thylakoid membrane
c) thylakoid lumen
d) outer membrane

13. Which of the following is an accessory pigment
a) chl a
b) chl b
c) carotenoids
d) none of these

14. Which of the following statements are incorrect regarding photosystems
a) The reaction of PS I is P 700 and Chl a is predominant pigment
b) The reaction centre of PS II is P680 and Chl b is predominant pigment
c) Both photosystems are located on the outer membrane
d) PSI is located on the thylakoid membrane

15. Which of the following statements are incorrect regarding light reaction
a) light reaction is called as Hill reaction
b) light reaction takes place in the grana of the chloroplast
c) CO2 fixation to carbohydrate is the major event in light reaction
d) ATP and NADPH are produced in light reaction

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Answers
1. d) all of these
2. c) animals, bacterium and fungi
3. d) rhodoplast
4. a) leucoplasts contain thylakoids and photosynthetic pigments
5. b) chloroplast
6. d) all of these
7. d) all of these
8. a) grana
9. b) stroma
10. b) stroma
11. a) chlorophyll a
12. b) thylakoid membrane
13. c) carotenoids
14. c) Both photosystems are located on the outer membrane
15. c) CO2 fixation to carbohydrate is the major event in light reaction
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