Describe adaptations of the plant sample. Test the presence of starch in the given chemical solution. Study comparatively the pH of water samples obtained from different sources.
Understand the Problem
The question involves describing biological adaptations of specific plant samples and conducting a biochemical test for starch, followed by comparing the pH of water samples from different sources.
Answer
Aloe vera, Agave adapt for arid survival. Use iodine for starch test. Compare pH of water samples.
The plant adaptations include thick, fleshy leaves for water conservation in Aloe vera or Agave. Starch is tested using iodine, turning blue-black if present. pH of water samples varies based on source and is measured comparatively.
Answer for screen readers
The plant adaptations include thick, fleshy leaves for water conservation in Aloe vera or Agave. Starch is tested using iodine, turning blue-black if present. pH of water samples varies based on source and is measured comparatively.
More Information
Iodine turns starch blue-black due to a chemical reaction forming a starch-iodine complex. Aloe and Agave are CAM plants that photosynthesize at night.
Tips
Ensure leaves are properly decolored before iodine application to see clear results.
Sources
- Explain the process of testing the presence of starch in leaves - byjus.com
- Starch Test for Plants - Life Science Experiment - learning-center.homesciencetools.com
- Testing a leaf for starch - Photosynthesis – WJEC - BBC - bbc.co.uk
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