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 Form 2 Biology respiration questions and answers

While investigating a certain metabolic process in plants, students set up the apparatus as shown below in a classroom and monitored it for 48 hours.
(a) Identify the metabolic process under investigation.
(b) Account for the observations made in the test tube at the end of the investigation.

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Answer Text:
a)- Respiration
b)- Plants carry out respiration producing carbon (IV) oxide gas which reacts with lime water/ calcium hydroxide forming a white precipitate/ insoluble calcium carbonate.