BIOLOGY-Plant Water Relations Questions and Answers
Plant Water Relations questions with answers cover essential biology concepts such as osmosis, transpiration, and water potential in plants. These biology questions and answers are commonly asked in NEET, AIIMS, and medical entrance exams, helping students understand how plants absorb, transport, and utilize water efficiently. Practicing these MCQs enhances conceptual clarity about plant physiology and cellular mechanisms. Students can download biology PDFs and attempt online quizzes to improve accuracy and recall for competitive medical exams.
BIOLOGY-Plant Water Relations
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50 questions
41. What is the main factor affecting transpiration rate in darkness?
- Stomatal closure
- Temperature
- Humidity
- Wind
42. Which element deficiency affects water relation in plants?
- Potassium
- Nitrogen
- Phosphorus
- Sulfur
43. What is the term for water movement through dead xylem cells?
- Conduction through dead cells
- Symplastic movement
- Apoplastic movement
- Transmembrane movement
44. Which process is responsible for morning dew on grass?
- Guttation
- Transpiration
- Condensation
- Evaporation
45. What is the term for plants adapted to saline environments?
- Halophytes
- Xerophytes
- Hydrophytes
- Mesophytes
46. Which process describes water uptake by seeds during germination?
- Imbibition
- Osmosis
- Diffusion
- Active transport
47. What is the main function of the cuticle in leaves?
- Reduce water loss
- Increase photosynthesis
- Enhance gas exchange
- Store water
48. Which process describes water movement from high to low water potential?
- Osmosis
- Diffusion
- Active transport
- Imbibition
49. What is the term for the continuous water column in xylem?
- Water column
- Sap stream
- Transpiration stream
- Xylem flow
50. Which factor most affects transpiration in humid conditions?
- Humidity
- Temperature
- Light
- Wind