Question

Based on the above description of transpiration and photosynthesis, which type of change happens to water during each process?

A. In transpiration, because some of its properties change, water undergoes a physical change but keeps its identity. In photosynthesis, because its identity changes, water undergoes a chemical change.

B. In transpiration, because some of its properties change, water undergoes a chemical change but keeps its identity. In photosynthesis, because its identity changes, water undergoes a physical change.

C. In transpiration, because its physical properties change, water undergoes a physical change and loses its identity. In photosynthesis, because it keeps its identity, water undergoes a chemical change.

D. None of the above.

Answer 1

In transpiration, water undergoes a physical change while in photosynthesis, water undergoes a chemical change.

Step-by-step explanation:

In transpiration, water undergoes a physical change but keeps its identity. Due to the evaporation of water through the stomata of plant leaves, the water changes from a liquid to a gas, but it is still water. This physical change does not alter the molecular structure of water.

On the other hand, in photosynthesis, water undergoes a chemical change. Water molecules are split during photosynthesis, and the hydrogen atoms are used to create glucose while the oxygen atoms are released as oxygen gas. This chemical change results in the transformation of water into glucose.

To summarize:

• In transpiration, water undergoes a physical change but keeps its identity.
• In photosynthesis, water undergoes a chemical change and is transformed into glucose.