Stomatal aperature is surrounded by guard cells and opens when guard cells are

Related MCQs

• In guard cells when sugar is converted into starch, the stomatal pore (CBSE 1997)
• Guard cells differ from epidermal cells in having. (CPMT 1993, CBSE 2011)
• Several statements are given here in reference to cone cells which of the following option indicates all correct statements for cone cells ? Statements (i) cone cells are less sensitive than Rod cells (ii) They are responsible for colour vision (iii) Erythrolobe is photopigment which is sensitive to red colour light (iv) They are absent in fovea of retina
• Element involved in stomatal regulation its opening and closing is(CPMT 1989, 2004, Kerala 2000, Manipal 2001, Pb. PMT 2001, Uttrakhant 2001, DPMT 2002, Wardha 2003, 2011, AMU 2005)
• Stomatal frequency indicates.
• The most effective light for stomatal opening is_____________
• Stomatal opening is under the control of (KCET 1988, Manipur 2005)
• It is produced during water stress that brings stomatal closure. (AMU 1992, CBSE 1993, 1994, 2001, RPMT 2000, JIPMER 2000, Orissa 2009, MP PMt 1992)
• For keeping stomata open, besides K+ ions the guard cells require a constant supply of
• Stomata open during day time because the guard cells (CPMT 1987)