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. |
Where are stomata present in submerged hydrophytes? |
| A. | Nowhere |
| B. | On lower surface |
| C. | In the corners |
| D. | On the upper surface |
| Answer» B. On lower surface | |
| 2. |
What are plants adapted to grow in the sand called? |
| A. | Halophytes |
| B. | Hydrophytes |
| C. | Mesophytes |
| D. | Psammophytes |
| Answer» E. | |
| 3. |
In which plants mechanical tissue is best developed? |
| A. | Mesophytes |
| B. | Xerophytes |
| C. | Psammophytes |
| D. | Hydrophytes |
| Answer» C. Psammophytes | |
| 4. |
Which of the following animal excretes solid urine? |
| A. | Crow |
| B. | Fishes |
| C. | Kangaroo rat |
| D. | Camel |
| Answer» D. Camel | |
| 5. |
Through which part does photosynthesis occur in xerophytes? |
| A. | Scaly leaves |
| B. | Modified stems |
| C. | Root |
| D. | Chlorophyll |
| Answer» C. Root | |
| 6. |
In which plants do sunken stomata is seen? |
| A. | Temperate plants |
| B. | Hydrophytes |
| C. | Xerophytes |
| D. | Tropical plants |
| Answer» D. Tropical plants | |
| 7. |
In which region do succulents grow? |
| A. | Tropical |
| B. | Temperate |
| C. | Antarctica |
| D. | Desert |
| Answer» E. | |
| 8. |
Which is the adaptive radiation is used by poikilotherms to protect against extreme heat? |
| A. | Migration |
| B. | Cooling |
| C. | Aestivation |
| D. | Hibernation |
| Answer» D. Hibernation | |
| 9. |
In which plants do stomata open at night? |
| A. | Hydrophytes |
| B. | Neem |
| C. | Mango |
| D. | Succulents |
| Answer» E. | |
| 10. |
What are the plants living in the desert called? |
| A. | Hydrophytes |
| B. | Mesophytes |
| C. | Sciophytes |
| D. | Hydrophytes |
| Answer» C. Sciophytes | |
| 11. |
By what mechanism does the body compensate for low oxygen availability in altitude sickness? |
| A. | Increasing the binding affinity of hemoglobin |
| B. | Decreasing breathing rate |
| C. | Decreasing the binding affinity of hemoglobin |
| D. | Increasing red blood cell formation |
| Answer» E. | |
| 12. |
Which of the following is a symptom of altitude sickness? |
| A. | Irritation |
| B. | Heart palpitations |
| C. | Bleeding |
| D. | Hunger |
| Answer» C. Bleeding | |
| 13. |
At what height does a person experience altitude sickness? |
| A. | >3500 m |
| B. | <3500 m |
| C. | >500 feet |
| D. | <500 feet |
| Answer» B. <3500 m | |
| 14. |
What is an attribute of the organism that enables the organism to survive and reproduce in its habitat called? |
| A. | Homeostasis |
| B. | Adaptation |
| C. | Migration |
| D. | Hibernation |
| Answer» C. Migration | |