T.W. Engelmann Experiments

Q. Pick the right option regarding aerobic bacteria used in T.W. Engelmann’s experiment from the given options.

1. Splits light into its spectral components
2. Grows/accumulates in the region where production of oxygen is optimum
3. Accumulates in the region which lacks oxygen
4. Acts as a monochromator when light passes through it

Q. Match the following scientists with their discoveries. Scientist Discovery

A.	Engelmann	I.	Chemical composition of chlorophyll and carotenoids
B.	Willstatter and Stoll	II.	$C_4$ cycle
C.	Hatch and Slack	III.	In the presence of light, isolated chloroplast from green leaves reduce a variety of compounds
D.	Robert Hill	IV.	Green substances is located within special bodies in plants

1. A-IV, B-I, C-II, D-III
   
2. A-I, B-II, C-III, D-IV
3. A-IV, B-III, C-II, D-I
4. A-I, B-IV, C-III, D-II

Q. Pick out the two wavelengths of light that corresponded to high bacterial growth in the scientist's experiment who gave the first action spectrum of photosynthesis.

1. Green, red
2. Blue, green
3. Yellow, green
4. Red, blue

Q. What did Engelmann conclude from the congregation of bacteria in the red and blue areas?

1. Bacteria release excess carbon dioxide in these areas
2. Bacteria congregate in these areas due to an increase in the temperature of red and blue light
3. Bacteria congregate in these areas because these areas had the most oxygen released
4. Bacteria are attracted to red and blue light and thus these wavelengths are more reactive than other wavelengths