Guard cells regulate (Orissa 2008, CBSE 2009)

Related MCQs

• Stomatal aperature is surrounded by guard cells and opens when guard cells are
• Guard cells differ from epidermal cells in having. (CPMT 1993, CBSE 2011)
• 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)
• In guard cells when sugar is converted into starch, the stomatal pore (CBSE 1997)
• Starch of guard cells is converted into PEP through. (Guj. CET 2008)
• 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
• Which of the following is water stress hormone? (CBSE-1993, MPPMT-1995, BHU 1998, CETCHD, Kerala 2000, Orissa- 2003)
• Most common monomer of Carbohydrate is…… [Orissa JEE 2008]
• Middle lamella is made up of which substance? (CBSE-2009)
• Microfilaments are ________ . (CBSE-2009)