Question

CLIPS
COBALT CHLORIDE
PAPER
SLIDES
(a) Name the colour of dry cobalt chloride paper?
(b) Is the experimental leaf a monocot or a dicot?
Give a reason to support your answer.
(c) Why are glass slides placed over the dry cobalt
chloride papers?
(d) After about half an hour what change, if any,
would you expect to find in the cobalt
chloride paper placed on the dorsal and ventral
sides of the leaf? Give a reason to support your
answer,​

Answer 1

Answer:

i)colour of dry cobalt chloride paper is blue

ii)the leaf is a monocot as it is having reticulate venation. and more transpiration occurs from under surface of leaves.

iii)glass slides are placed over dry cobalt chloride paper so as to retain the strips in their position.

iv)cobalt chloride paper turns blue in colour on dorsal side of leaf as transpiration takes place from lower surface , stomata are open on lower surface

Explanation:

Answer 2

Answer:

(i) The colour of dry cobalt chloride paper is blue.

(ii) Dicot leaf: It has reticulate venation.

(iii) To prevent water vapour of the air from interfering the experiment.

(iv) The cobalt chloride paper placed on the lower surface of the leaf will show more pink dots as there are more stomata. The upper surface has less stomata than the lower surface.

Hope it helps u!!✌