hamburger

Write an experiment to show that chlorophyll is necessary for photosynthesis.

By BYJU'S Exam Prep

Updated on: September 25th, 2023

We can show that chlorophyll is required for photosynthesis using the starch experiment. Experiment on chlorophyll is necessary for photosynthesis are:

  • Prepare a potted plant with variegated leaves such as croton and place it in a dark place without direct sunlight for 3 days. This stops photosynthesis and weakens the plant.
  • The plants are then placed in the sun for 6-8 hours.
  • Plants can now photosynthesize and produce starch.
  • Mark the green part of the leaf and draw it on a piece of paper. Mark the area in green and yellow.
  • The green part contains chlorophyll, the yellow part does not.
  • Leaves are soaked in boiling alcohol to decolorize. The leaves slowly lose their green color and turn into alcohol.
  • Soak the discolored leaves in the iodine solution. Remove the leaves from the iodine solution and rinse with distilled water.
  • Remove the leaves from the distilled water and place them in a Petri dish.

Observation of chlorophyll is necessary for photosynthesis

  • Bi-colored areas can be seen on the leaves.
  • Reddish brown and bluish-black.

Conclusion:

  • From this, we can conclude that the previously green parts of the leaves have become blue-black and the yellow parts have become reddish-brown.
  • Green leaves contain chlorophyll. Therefore, they photosynthesize to produce starch, which becomes blue-black with iodine.

Summary:

Write an experiment to show that chlorophyll is necessary for photosynthesis.

A starch experiment to show that chlorophyll is necessary for photosynthesis is mentioned above along with observation and conclusion. Photosynthesis is a process where phototrophs convert light energy to chemical energy that is used to fuel cellular activities.

Our Apps Playstore
POPULAR EXAMS
SSC and Bank
Other Exams
GradeStack Learning Pvt. Ltd.Windsor IT Park, Tower - A, 2nd Floor, Sector 125, Noida, Uttar Pradesh 201303 help@byjusexamprep.com
Home Practice Test Series Premium