In vascular plant, Xylem is one of the two tissue involve in transport water from roots to stems and leaves and also transports nutrients.
Two types of cells of this tissue are tracheids and vessel elements which are involved in transport.
<h3>What is the function of xylem ?</h3>
Xylem and phloem are known are two major vascular tissue.
Xylem tissue involve in transport of water and some nutrients from the roots to the leaves.
Phloem tissue involve transport of sucrose and other nutrients throughout the plant.
The passive transport called xylem sap occur through a long tube xylem cells.
The phenomenon where the xylem sap allow the flow upwards against gravity is called capillary action.
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Answer:
-During citric acid cycle or Krebs cycle, radioactive carbon will be first appear in citric acid
Explanation:
During cellular respiration, glucose is first converted into pyruvate molecules by the process of glycolysis. These pyruvate molecules go for oxidative decarboxylation, during which acetyl co-enzyme A (acetyl CoA) is formed along with removal of carbon dioxide.
The acetyl co-enzyme enters to the next step in cellular respiration or citric acid cycle or Krebs cycle. The first step of citric acid cycle is formation of citric acid by joining of acetyl CoA and oxaloacetate.
As citric acid is first molecule formed during citric acid cycle, radioactive carbon would be first appear in citric acid.
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