Class 9 Exam > Class 9 Questions > Why are guard cells important for plant survi... Start Learning for Free
Why are guard cells important for plant survival?
- a)They transport nutrients.
- b)They store food.
- c)They regulate the opening and closing of stomata.
- d)They protect the plant from predators.
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
Why are guard cells important for plant survival?a)They transport nutr...
Guard cells regulate the opening and closing of stomata, controlling gas exchange and water evaporation, which are vital for plant survival. Option C accurately identifies their critical function.
Free Test
FREE
| Start Free Test |
Community Answer
Why are guard cells important for plant survival?a)They transport nutr...
Importance of Guard Cells in Plant Survival
Guard cells are specialized cells located on the surface of leaves and stems, playing a crucial role in the regulation of stomata, which are tiny openings that allow gas exchange. Their function is pivotal for plant survival for several reasons:
Regulation of Gas Exchange
- Guard cells control the opening and closing of stomata.
- This regulation facilitates the intake of carbon dioxide (CO2) for photosynthesis while minimizing water loss.
Water Conservation
- By closing the stomata during hot or dry conditions, guard cells help reduce transpiration (water loss through evaporation).
- This is essential for maintaining water balance and preventing wilting or dehydration of the plant.
Oxygen Release
- During photosynthesis, guard cells enable the release of oxygen (O2) as a byproduct.
- Proper functioning of stomata ensures that oxygen accumulates in the environment, which is vital for aerobic organisms.
Adaptation to Environmental Conditions
- Guard cells can respond to environmental signals such as light, humidity, and CO2 levels.
- This adaptability allows plants to optimize their gas exchange processes based on current conditions.
In summary, guard cells are integral to the plant's ability to manage gas exchange effectively, conserve water, and adapt to varying environmental conditions. Their role in regulating stomatal openings is fundamental for photosynthesis and overall plant health, making them essential for plant survival.
Guard cells are specialized cells located on the surface of leaves and stems, playing a crucial role in the regulation of stomata, which are tiny openings that allow gas exchange. Their function is pivotal for plant survival for several reasons:
Regulation of Gas Exchange
- Guard cells control the opening and closing of stomata.
- This regulation facilitates the intake of carbon dioxide (CO2) for photosynthesis while minimizing water loss.
Water Conservation
- By closing the stomata during hot or dry conditions, guard cells help reduce transpiration (water loss through evaporation).
- This is essential for maintaining water balance and preventing wilting or dehydration of the plant.
Oxygen Release
- During photosynthesis, guard cells enable the release of oxygen (O2) as a byproduct.
- Proper functioning of stomata ensures that oxygen accumulates in the environment, which is vital for aerobic organisms.
Adaptation to Environmental Conditions
- Guard cells can respond to environmental signals such as light, humidity, and CO2 levels.
- This adaptability allows plants to optimize their gas exchange processes based on current conditions.
In summary, guard cells are integral to the plant's ability to manage gas exchange effectively, conserve water, and adapt to varying environmental conditions. Their role in regulating stomatal openings is fundamental for photosynthesis and overall plant health, making them essential for plant survival.
 | Explore Courses for Class 9 exam |  |
Top Courses for Class 9View all
Top Courses for Class 9
Question Description
Why are guard cells important for plant survival?a)They transport nutrients.b)They store food.c)They regulate the opening and closing of stomata.d)They protect the plant from predators.Correct answer is option 'C'. Can you explain this answer? for Class 9 2026 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Why are guard cells important for plant survival?a)They transport nutrients.b)They store food.c)They regulate the opening and closing of stomata.d)They protect the plant from predators.Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 9 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Why are guard cells important for plant survival?a)They transport nutrients.b)They store food.c)They regulate the opening and closing of stomata.d)They protect the plant from predators.Correct answer is option 'C'. Can you explain this answer?.
Why are guard cells important for plant survival?a)They transport nutrients.b)They store food.c)They regulate the opening and closing of stomata.d)They protect the plant from predators.Correct answer is option 'C'. Can you explain this answer? for Class 9 2026 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Why are guard cells important for plant survival?a)They transport nutrients.b)They store food.c)They regulate the opening and closing of stomata.d)They protect the plant from predators.Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 9 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Why are guard cells important for plant survival?a)They transport nutrients.b)They store food.c)They regulate the opening and closing of stomata.d)They protect the plant from predators.Correct answer is option 'C'. Can you explain this answer?.
Solutions for Why are guard cells important for plant survival?a)They transport nutrients.b)They store food.c)They regulate the opening and closing of stomata.d)They protect the plant from predators.Correct answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 9. Download more important topics, notes, lectures and mock test series for Class 9 Exam by signing up for free.
Here you can find the meaning of Why are guard cells important for plant survival?a)They transport nutrients.b)They store food.c)They regulate the opening and closing of stomata.d)They protect the plant from predators.Correct answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Why are guard cells important for plant survival?a)They transport nutrients.b)They store food.c)They regulate the opening and closing of stomata.d)They protect the plant from predators.Correct answer is option 'C'. Can you explain this answer?, a detailed solution for Why are guard cells important for plant survival?a)They transport nutrients.b)They store food.c)They regulate the opening and closing of stomata.d)They protect the plant from predators.Correct answer is option 'C'. Can you explain this answer? has been provided alongside types of Why are guard cells important for plant survival?a)They transport nutrients.b)They store food.c)They regulate the opening and closing of stomata.d)They protect the plant from predators.Correct answer is option 'C'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Why are guard cells important for plant survival?a)They transport nutrients.b)They store food.c)They regulate the opening and closing of stomata.d)They protect the plant from predators.Correct answer is option 'C'. Can you explain this answer? tests, examples and also practice Class 9 tests.
| Explore Courses for Class 9 exam | |
Top Courses for Class 9
Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
