Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEET2009BotanyTransport in PlantsActual

Guard cells help in

Options

  1. Aprotection against grazing
  2. Btranspiration
  3. Cguttation
  4. Dfighting against infection

Correct answer

B. transpiration

Step-by-step solution

Guard cells help in transpiration. Each stomatal opening is surrounded by two specialized epidermal cells, called guard cells. Because of their small size guard cells are rapidly influenced by turgor change and thus regulate the opening and closing of stomata.

Practice Transport in Plants on Quantrex Academy →

More from Transport in Plants

Which of the following helps in maintenance of the pressure gradient in sieve tubes? 2024In the given figure, which component has thin outer walls and highly thickened inner walls? 2024Match List I with List II: List I List II A.Cohesion I. More attraction in liquid phase B. Adhesion II. Mutual attraction among water molecules C. Surface tension III. Water loss i 2023During symport two different molecules move across the membrane 2023Identify the correct statements regarding Mass flow hypothesis. (A) Mass flow is faster than diffusion. (B) Mass flow is the result of pressure difference between the end points. ( 2023Given below are two statements : Statement I: The process of translocation through phloem is unidirectional but through xylem, it is bidirectional. Statement II: The most readily m 2023Movement and accumulation of ions across a membrane against their concentration gradient can be explained by: 2023Given below are two statements: Statement I: The forces generated by transpiration can create pressures sufficient to lift a xylem sized column of water over 130 metres high. State 2023 Full Transport in Plants list All NEET PYQs