Question 23

A faster colour change of a dry cobalt chloride paper affixed to the lower surface of a leaf than the upper one, indicates that

  • A.sunlight slows down water loss from the upper surface
  • B.the lower surface of the leaf has more stomata
  • C.Sunlight causes the stomata on the upper surface to close
  • D.stomata are not present on the upper surface of a leaf
Objective

Question details

Exam body
WAEC
Subject
Biology
Year
2005
Question no.
#23
Type
Objective

More from this paper

See all Biology 2005 questions