MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Statement A: Transpiration creates pressure in xylem sufficient enough to transport water up to 130 m high. Statement B: Transpiration creates a pushing force. |
| A. | Both the statements are true |
| B. | Both the statements are false |
| C. | Statement A is true but Statement B is false |
| D. | Statement B is true but Statement A is false |
| Answer» D. Statement B is true but Statement A is false | |
| 2. |
Statement A: Inner wall is pushed outwards Statement B: Outer wall is pulled outwards |
| A. | Both the statements are true |
| B. | Both the statements are false |
| C. | Statement A is true but Statement B is false |
| D. | Statement B is true but Statement A is false |
| Answer» E. | |
| 3. |
The small diameter of the tracheary elements increases ___________ |
| A. | adhesion |
| B. | cohesion |
| C. | tensile strength |
| D. | capillarity |
| Answer» E. | |
| 4. |
Transpirative loss is studied through girdling experiment. |
| A. | True |
| B. | False |
| Answer» C. | |
| 5. |
Which among the following is an internal factor affecting transpiration? |
| A. | Temperature |
| B. | Humidity |
| C. | % open stomata |
| D. | Wind speed |
| Answer» D. Wind speed | |
| 6. |
Which among the following is an external factor affecting transpiration? |
| A. | Light |
| B. | Number of stomata |
| C. | Canopy structure |
| D. | Water status of plant |
| Answer» B. Number of stomata | |
| 7. |
Statement A: C3 plants are twice efficient as C4 plants in terms of fixing carbon dioxide. Statement B: C4 plant loses twice the amount of water as C3 plant for same amount of CO2 fixed. |
| A. | Both the statements are true |
| B. | Both the statements are false |
| C. | Statement A is true but Statement B is false |
| D. | Statement B is true but Statement A is false |
| Answer» C. Statement A is true but Statement B is false | |
| 8. |
Which of the following is not a function of stomata? |
| A. | Regulation of turgidity of guard cells |
| B. | Loss of water vapor |
| C. | Loss due to guttation |
| D. | Exchange of O<sub>2</sub> and CO<sub>2</sub> |
| Answer» D. Exchange of O<sub>2</sub> and CO<sub>2</sub> | |
| 9. |
Isobilateral leaf has equal number of stomata on both surfaces of the leaf. |
| A. | True |
| B. | False |
| Answer» B. False | |