MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which is false regarding chlorophyll a and b? |
| A. | Chlorophyll b is an accessory pigment |
| B. | Chlorophyll is the main chief pigment |
| C. | Chlorophyll a is more than chlorophyll b |
| D. | Both are present in equal proportion |
| Answer» E. | |
| 2. |
The size of the chlorophyll molecule is Head: 20 x 20 A , Tail: 15 A |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
How many numbers of chlorophyll are present in a photosynthetic unit? |
| A. | 100 150 |
| B. | 90 |
| C. | 200 250 |
| D. | 300 350 |
| Answer» D. 300 350 | |
| 4. |
What is the empirical formula of chlorophyll b? |
| A. | C<sub>55</sub>H<sub>70</sub>O<sub>6</sub>N<sub>4</sub>Mg |
| B. | C<sub>55</sub>H<sub>72</sub>O<sub>5</sub>N<sub>4</sub>Mg |
| C. | C<sub>55</sub>H<sub>79</sub>O<sub>7</sub>N<sub>4</sub>Mg |
| D. | C<sub>55</sub>H<sub>80</sub>O<sub>6</sub>N<sub>5</sub>Mg |
| Answer» B. C<sub>55</sub>H<sub>72</sub>O<sub>5</sub>N<sub>4</sub>Mg | |
| 5. |
Who found out that the pigment chlorophyll is found in the chloroplast in plant cells? |
| A. | Robert Hill |
| B. | Hugo de Vries |
| C. | Julius Von Sachs |
| D. | C. Van Neil |
| Answer» D. C. Van Neil | |
| 6. |
Chlorophyll is soluble in water. |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
Methyl group is mainly present in which photosynthetic pigment? |
| A. | Chlorophyll b |
| B. | Xanthophyll |
| C. | Carotenoids |
| D. | Chlorophyll a |
| Answer» E. | |
| 8. |
Which of the following is the main function of carotenes? |
| A. | Not an accessory pigment |
| B. | Photooxidation |
| C. | Helps in photosynthesis |
| D. | Helps in transpiration |
| Answer» C. Helps in photosynthesis | |
| 9. |
Which is the correct color matching in chromatogram? |
| A. | Chlorophyll a yellow-green |
| B. | Chlorophyll b yellow-orange |
| C. | Xanthophyll yellow |
| D. | Carotenoids bright or blue-green |
| Answer» D. Carotenoids bright or blue-green | |
| 10. |
Which of the following is not an accessory pigment? |
| A. | Chlorophyll a |
| B. | Bacteriochlorophyll |
| C. | Chlorophyll b |
| D. | Phycobilin |
| Answer» B. Bacteriochlorophyll | |