Question

Match the columns

Column I	Column II
a) Girdling experiment	p) Growth
b) Cobalt chloride paper test	q) Transpiration
c) Cresograph	r) Unequal transpiration on two leaf surfaces
d) Bell jar experiment	s) Translocation in phloem

A) a-s, b-r, c-p, d-q
B) a-s, b-p, c-q, d-r
C) a-r, b-p, c-s, d-q
D) a-s, b-p, c-s, d-r

Answer 1

Hint: In this question we are going to find the correct option for the given column. First we need to know that the options in column I match the option in column II.

Complete answer:
Let's discuss and find the correct answer.
>Girdling experiment :-Girdling experiment is performed for the demonstration of a translocation phloem tissue. It proves that ascent of sap occurs through the xylem elements, which are embedded deep inside the tree trunk, whereas transport of sugar occurs through the secondary phloem, which is present in the bark of the tree. Hence a-s is correct.
>Cobalt chloride paper test :-Cobalt chloride paper test is the hygrometric method to demonstrate transpiration or it is the method to perform to demonstrate unequal transpiration on two leaf surfaces. As considerably more stomata are present on the lower side of the leaf, more transpiration will occur on the lower surface of the leaf. Hence b-r is correct.
>Crescograph :-A Crescograph is a device for measuring growth in plants. It was invented in the early 20th century by sir Jagadish chandra bose, who was a bengal polymath, biologist, physicist, botanist and archaeologist. Hence c-p is correct.
>Bell jar experiment:-Bell jar experiment is a test for transpiration. If the plant is covered with a glass bell jar and kept in sunlight then the water droplet will get deposited on the inner side of the jar. The source of this water droplets is its transpiration. Hence d-q is correct.

Hence option A:a-s, b-r, c-p, d-q is the correct answer.

Note:Both cobalt chloride method and bell jar experiment is related to transpiration. So, please remember that,
>Cobalt chloride method is related to unequal transpiration.
>Bell jar experiment is related to transpiration only.