Class 9 Subjects

Grade 9 Biology MCQ

Grade 9 Biology Quiz Answers - Topic

Opening and Closing of Stomata MCQ with Answers PDF

Opening and closing of stomata Multiple Choice Questions (MCQ) to practice opening and closing of stomata quiz answers PDF to study online 9th grade biology course. Transport Multiple Choice Questions and Answers (MCQs), Opening and Closing of Stomata quiz questions PDF for online teaching certification programs. "Opening and Closing of Stomata Book" PDF: blood groups, arterial system, transport: transpiration, human heart test prep for online classes.

"During the day, the plants keep their" Multiple Choice Questions (MCQ) on opening and closing of stomata with choices stomata opens, stomata closed, phloem blocked, and xylem blocked for online teaching certification programs. Study transport quiz questions for online certificate programs for online school and college.

MCQs on Opening and Closing of Stomata

MCQ: During the day, the plants keep their

stomata opens
stomata closed
phloem blocked
xylem blocked

MCQ: The inner side of guard cells is

rough
straight
concave
convex

MCQ: The outer side of guard cells is

concave
convex
rough
none of above

MCQ: The number of guard cells of the stoma is

ten
two
four
eight

MCQ: The ions that flow back to guard cells, from epidermal cells at the end of the day are

potassium ions
magnesium ions
phosphorus ions
Sulphur ions