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
Showing 10 of
50 questions
21. What is the primary site of transpiration in most plants?
- Leaves
- Stems
- Roots
- Flowers
22. Which theory explains the ascent of sap in tall trees?
- Cohesion-tension theory
- Root pressure theory
- Imbibition theory
- Active transport theory
23. What is the term for the attraction between water and solid surfaces?
- Adhesion
- Cohesion
- Surface tension
- Capillarity
24. Which process describes the absorption of water by dry seeds?
- Imbibition
- Osmosis
- Diffusion
- Plasmolysis
25. What is the main component of plant cell walls that affects water relations?
- Cellulose
- Lignin
- Pectin
- Hemicellulose
26. Which hormone promotes stomatal closure during water stress?
- Abscisic acid
- Auxin
- Gibberellin
- Cytokinin
27. What is the term for plants adapted to dry environments?
- Xerophytes
- Hydrophytes
- Mesophytes
- Halophytes
28. Which process describes the movement of solutes in water?
- Diffusion
- Osmosis
- Active transport
- Bulk flow
29. What is the water potential of a flaccid cell?
- Equal to solute potential
- Zero
- Positive
- Maximum
30. Which structure allows water to move between plant cells?
- Plasmodesmata
- Stomata
- Casparian strip
- Cuticle