MCQOPTIONS
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MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Why plants can get along without the need for specialised respiratory organs? |
| A. | It would be an extra expense |
| B. | They don t like it |
| C. | Each plant part takes care of its own needs |
| D. | Oxygen is easily available for all the parts of the plants |
| Answer» D. Oxygen is easily available for all the parts of the plants | |
| 2. |
By the use of which of the following structures, plants exchange gases? |
| A. | Stem |
| B. | Root |
| C. | Bark |
| D. | Stomata |
| Answer» E. | |
| 3. |
Which of the following gases do plants require for respiration? |
| A. | O<sub>2</sub> |
| B. | CO<sub>2</sub> |
| C. | N<sub>2</sub> |
| D. | H<sub>2</sub>O |
| Answer» B. CO<sub>2</sub> | |
| 4. |
Which of the following is used as a precursor for the biosynthesis of other molecules? |
| A. | Phosphorous substrate |
| B. | Nitrogen substrates |
| C. | Carbon skeletons |
| D. | Sulphur skeletons |
| Answer» D. Sulphur skeletons | |
| 5. |
Which of the following acts as the energy currency of the cell? |
| A. | ATP |
| B. | Enzymes |
| C. | Proteins |
| D. | DNA |
| Answer» B. Enzymes | |
| 6. |
During oxidation within a cell, all the energy is released into a single step. |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
Which of the following compounds are not oxidised to release energy? |
| A. | Proteins |
| B. | Fats |
| C. | Carbohydrates |
| D. | DNA |
| Answer» E. | |
| 8. |
The breaking of which of the following bonds leads to release of energy? |
| A. | P-P bonds |
| B. | C-C bonds |
| C. | N-N bonds |
| D. | S-S bonds |
| Answer» C. N-N bonds | |
| 9. |
Where does the photosynthesis take place in eukaryotes? |
| A. | Mitochondria |
| B. | Cytoplasm |
| C. | Chloroplasts |
| D. | Vacuoles |
| Answer» D. Vacuoles | |
| 10. |
What is meant by cellular respiration? |
| A. | Breakdown of water |
| B. | Breakdown of air to consume energy |
| C. | Breakdown of food materials to release energy |
| D. | Breakdown of soil to release energy |
| Answer» D. Breakdown of soil to release energy | |
| 11. |
In green plants, all the cells, tissues and organs carry out photosynthesis. |
| A. | True |
| B. | False |
| Answer» C. | |
| 12. |
What kind of organisms are fungi? |
| A. | Saprophytes |
| B. | Carnivores |
| C. | Omnivores |
| D. | Herbivores |
| Answer» B. Carnivores | |
| 13. |
Which of the following can synthesise their food? |
| A. | Yellow plants |
| B. | Green plants |
| C. | Animals |
| D. | Mycoplasma |
| Answer» C. Animals | |
| 14. |
Where does the energy required to carry life processes come from? |
| A. | Food |
| B. | House |
| C. | Earth |
| D. | Galaxy |
| Answer» B. House | |