Last Updated on September 27, 2025 by XAM CONTENT
To succeed in Class 11 Biology exams, a strong grasp of Chapter 11 – Photosynthesis in Higher Plants is essential. Our comprehensive collection of chapterwise MCQ questions with answers for Class 11 Biology is designed according to the latest syllabus and exam guidelines, ensuring targeted preparation and better performance. It is a part of MCQ Questions for CBSE Class 11 Biology Series.
These multiple-choice questions will help you assess your knowledge, improve accuracy, and boost confidence for your exams. Whether you are preparing for school tests, online tests or competitive exams, these Photosynthesis in Higher Plants MCQs will strengthen your conceptual clarity.
| Chapter | Photosynthesis in Higher Plants |
| Book | Biology for Class 11 |
| Type of Questions | MCQ Questions |
| Nature of Questions | Competency Based Questions |
| Board | CBSE |
| Class | 11 |
| Subject | Biology |
| Useful for | Class 11 Studying Students |
| Answers provided | Yes |
| Difficulty level | Mentioned |
| Important Link | Class 11 Biology Chapterwise MCQ Questions |
MCQ Questions on Photosynthesis in Higher Plants Class 11 Biology (PDF Download)
MCQs
Q1. Which process is primarily responsible for the upward movement of water in tall trees?
(a) Capillarity
(b) Root pressure
(c) Guttation
(d) Transpiration pull
Show Answer
Answer: (d)
Explanation: Transpiration pull creates a negative pressure that drives water upward in xylem.
Q2. What is the role of aquaporins in plant cells?
(a) Ion exchange
(b) Water transport
(c) ATP synthesis
(d) Glucose transport
Show Answer
Answer: (b)
Explanation: Aquaporins are membrane proteins that facilitate water transport across cell membranes.
Q3. Which of the following conditions increases the rate of transpiration?
(a) High humidity
(b) Still air
(c) Low temperature
(d) High wind velocity
Show Answer
Answer: (d)
Explanation: High wind velocity removes water vapor around the leaf, increasing transpiration.
Q4. Which of these best describes guttation?
(a) Loss of water as vapor
(b) Exudation of sap
(c) Loss of water via stomata
(d) Root water uptake
Show Answer
Answer: (b)
Explanation: Guttation is the loss of water in liquid form from hydathodes, mainly at night.
Q5. Why does active transport require energy?
(a) It moves solutes along the concentration gradient
(b) It moves solutes against the concentration gradient
(c) It removes water from cells
(d) It breaks down proteins
Show Answer
Answer: (b)
Explanation: Active transport requires ATP to move substances against their concentration gradient.
Q6. Which property of water helps maintain continuous water column in xylem?
(a) Adhesion
(b) Cohesion
(c) Osmosis
(d) Capillarity
Show Answer
Answer: (b)
Explanation: Cohesion among water molecules maintains continuity of the water column.
Q7. Which of the following occurs when a cell is placed in a hypertonic solution?
(a) Plasmolysis
(b) Endosmosis
(c) Imbibition
(d) Turgor increase
Show Answer
Answer: (a)
Explanation: Water leaves the cell causing the cytoplasm to shrink away from the cell wall — plasmolysis.
Q8. In which tissue does translocation of sugars occur?
(a) Xylem
(b) Phloem
(c) Parenchyma
(d) Collenchyma
Show Answer
Answer: (b)
Explanation: Phloem tissue is responsible for transporting sugars from source to sink.
Q9. Which theory explains the mechanism of translocation in phloem?
(a) Root pressure theory
(b) Mass flow hypothesis
(c) Capillary theory
(d) Cohesion-tension theory
Show Answer
Answer: (b)
Explanation: The mass flow hypothesis explains bulk movement of sugars in phloem.
Q10. Which of the following best describes facilitated diffusion?
(a) ATP-driven process
(b) Moves against gradient
(c) Involves carrier proteins
(d) Active transport
Show Answer
Answer: (c)
Explanation: Facilitated diffusion uses carrier or channel proteins but does not require energy.
Q11. Which factor does NOT directly influence the rate of transpiration?
(a) Temperature
(b) Light
(c) Soil pH
(d) Humidity
Show Answer
Answer: (c)
Explanation: Soil pH has no direct role in the rate of water loss through transpiration.
Q12. What happens to a cell in an isotonic solution?
(a) It gains water
(b) It loses water
(c) No net water movement
(d) It bursts
Show Answer
Answer: (c)
Explanation: In an isotonic solution, water enters and exits the cell at equal rates — equilibrium.
Q13. Which condition enhances root pressure?
(a) High transpiration
(b) Low soil moisture
(c) High ion accumulation in roots
(d) Cold night
Show Answer
Answer: (c)
Explanation: Active ion uptake by roots increases osmotic pressure, enhancing root pressure.
Q14. What is the direction of water transport in xylem?
(a) Upward
(b) Downward
(c) Bidirectional
(d) Lateral only
Show Answer
Answer: (a)
Explanation: Water is transported upward from roots to leaves via xylem.
Q15. Which pressure develops in phloem during active sugar transport?
(a) Turgor pressure
(b) Negative pressure
(c) Diffusion pressure
(d) Atmospheric pressure
Show Answer
Answer: (a)
Explanation: Accumulation of sugars leads to water inflow and turgor pressure development in phloem.
Q16. Which structure connects adjacent plant cells for molecular exchange?
(a) Chloroplast
(b) Tonoplast
(c) Middle lamella
(d) Plasmodesmata
Show Answer
Answer: (d)
Explanation: Plasmodesmata are channels that connect cytoplasm of adjacent plant cells.
Q17. The movement of water through cell walls and intercellular spaces is called:
(a) Symplast pathway
(b) Apoplast pathway
(c) Transmembrane route
(d) Endocytosis
Show Answer
Answer: (b)
Explanation: The apoplast pathway allows water to move via cell walls and spaces without crossing membranes.
Q18. Which part of the root is mainly responsible for water absorption?
(a) Root cap
(b) Cortex
(c) Root hairs
(d) Endodermis
Show Answer
Answer: (c)
Explanation: Root hairs increase surface area for efficient water absorption.
Q19. Which ion is essential in the opening and closing of stomata?
(a) Na⁺
(b) K⁺
(c) Ca²⁺
(d) Mg²⁺
Show Answer
Answer: (b)
Explanation: Potassium ions play a major role in osmotically regulating stomatal movement.
Q20. Which of the following is a passive process in plants?
(a) Active transport
(b) Phloem loading
(c) Osmosis
(d) Endocytosis
Show Answer
Answer: (c)
Explanation: Osmosis is a passive movement of water across membranes based on solute gradient.
We hope the given mcq questions with Answers for Photosynthesis in Higher Plants Class 11 helps you in your learning.
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Topics from which mcq questions may be asked
- Light reactions
- Calvin cycle
- C4 and CAM pathways
Photosynthesis is the foundation of the food chain—converting light into life.
Frequently Asked Questions (FAQs) on Photosynthesis in Higher Plants MCQ Questions
Q1: What is the best way to prepare for Class 11 Biology MCQ questions?
A1: The best way is to study NCERT concepts thoroughly, practice topicwise MCQs regularly. Solving previous year MCQs and mock tests can boost accuracy and speed.
Q2: Are NCERT questions enough for Class 11 Biology MCQ-based exams?
A2: NCERT forms the base for all CBSE Physics MCQs. However, for better preparation, students should solve additional MCQs from reference books and practice HOTS and competency-based questions to develop better understanding.
Q3: Where can I find chapterwise Class 11 Biology MCQ questions with answers?
A3: You can find chapterwise MCQ questions with answers and detailed explanations on trusted educational platforms like xamcontent.com and physicsgurukul.com. These cover both basic and advanced-level questions.
Q4: Do CBSE Class 11 exams include MCQs?
A4: Yes, as per the latest CBSE exam pattern, objective questions, including MCQs, are part of the final exam paper. MCQs test conceptual understanding and application skills.
Q5: How to score high in Class 11 Biology MCQs?
A5: To score high, understand the theory from NCERT, solve a variety of MCQs (basic and conceptual), and regularly revise theory. Avoid guesswork and focus on time management during tests.
