Question

An experimental set-up to demonstrate respiration in germinating seeds is shown here. It is observed that water from the beaker has not risen into the delivery tube (bent tube). This is because (1) the set-up is airtight
(2) the beaker has coloured water
(3) carbon dioxide is not being absorbed
(4) no oxygen is available to seeds for respiration

Answer 1

Answer:

option 3 is the correct answer

Answer 2

The whole set up is to observe the production of CO2 by the seeds. Therefore, if the water is not rising in the delivery tube this implies that THE GERMINATING SEEDS ARE NOT RESPIRING I.E. PRODUCING CO2.

Thus, (3) is correct.